Banks have never had more technology with which to serve their customers. Mobile banking has become faster, account opening can take minutes, payments move almost instantly, artificial intelligence is beginning to personalise interactions and institutions are spending heavily to modernise the infrastructure behind these experiences. Yet better digital banking is not necessarily producing more loyal banking customers. Accenture’s 2025 global study of 49,300 consumers across 39 countries found that 73% used banks beyond their primary institution, while 58% had purchased a financial product or service from a new provider during the previous 12 months. The contradiction is becoming increasingly important: banks have spent years removing friction from financial services, but in doing so the industry has also made it easier for customers to compare, move and distribute their financial lives among competing providers. The next phase of digital banking may therefore be less about building another feature and more about answering a harder question: when almost every bank is digital, what gives a customer a reason to stay?
Digital Banking Is Becoming a Baseline
There was a period when having an excellent mobile banking application could meaningfully distinguish one bank from another. Customers noticed whether they could deposit a cheque remotely, freeze a card from their phone, receive instant notifications or open an account without visiting a branch. Institutions that moved quickly gained an advantage because competitors were still forcing customers through slower, more fragmented processes.
That advantage is becoming harder to sustain. Many of the capabilities that once defined digital leaders are now expected as standard banking functionality. Biometric authentication, instant payments, digital cards, self-service account management and app-based onboarding increasingly represent the minimum level of experience customers expect rather than a reason to maintain a deeper relationship with one institution.
Deloitte’s Digital Banking Maturity research describes a similar transition, arguing that digital maturity is moving beyond accumulating features towards streamlined processes, better experiences and stronger customer relationships. Its conclusion is particularly important for the competitive landscape: being digitally native by itself is no longer enough to differentiate a bank.
This does not mean technology investment is becoming less important. The opposite is happening. Gartner forecasts global enterprise IT spending across banking and investment services will rise 9.5% in 2026 to approximately $857.5 billion. Core modernisation, cloud infrastructure, cybersecurity, AI and data capabilities remain essential simply to compete. But that creates a different strategic problem. When competitors are investing in many of the same technologies, technology can simultaneously become more important operationally and less distinctive commercially.
Banks Removed Friction, but Friction Also Created Inertia
One of the great achievements of digital banking has been the removal of friction. Opening accounts is easier, payments are faster, information is more accessible and customers can perform transactions without arranging their lives around bank opening hours.
But some of the friction banks eliminated also contributed to customer inertia.
Changing financial providers once involved paperwork, branch visits and considerable inconvenience. Even when customers were dissatisfied, moving could seem more difficult than staying. Digitalisation has gradually weakened that barrier. A consumer can open another savings account from a smartphone, apply for a credit card elsewhere, transfer money between institutions or begin investing through a fintech without ending the relationship with their existing bank.
The consequence is that customers do not necessarily have to choose between staying and leaving anymore. They can simply add another provider.
Accenture’s research found that 73% of consumers were already engaging with banks beyond their primary institution and 33% had a relationship with a digital bank. The research argues that digitalisation has made many banking interactions more transactional while limited differentiation between institutions has encouraged consumers to use multiple providers.
That changes the meaning of loyalty. A customer can remain perfectly satisfied with a bank and still move the next valuable financial relationship somewhere else.
Customer Fragmentation May Matter More Than Customer Churn
Banks have traditionally paid close attention to churn because a closed account provides a clear indication that a relationship has been lost. Digital banking makes the picture less straightforward.
Consider a customer whose salary continues to arrive at the same bank every month. From a conventional perspective, the primary relationship appears intact. But the customer’s savings may have moved to another institution offering a better return, their everyday spending may be taking place through a competitor’s credit card, investments may sit with a digital wealth platform and their next mortgage could be originated by another lender.
The customer has not left. The economic relationship has fragmented.
This could become one of the more important changes in retail banking competition because banks can retain millions of nominal customers while gradually losing share of wallet. The current account may remain open long after the most profitable parts of the relationship have moved elsewhere.
There is evidence that satisfaction itself is becoming a weaker proxy for loyalty. Deloitte’s recent research into Gen Z and millennial banking customers found overall satisfaction levels across generations clustered between 93% and 95%, yet younger consumers showed the greatest switching risk. Deloitte concluded that younger customers appear less inclined to regard satisfaction as a reason to remain with their primary institution, partly because they face fewer obstacles to switching.
For banks, that creates an important distinction. Measuring whether customers are satisfied is not the same as understanding whether the institution is continuing to capture their financial activity.
The Fight Is Moving From Acquisition to Share of Financial Life
This could also change how banks think about customer acquisition. Digital technology has made acquiring customers faster, but an account opening is increasingly only the beginning of the competition.
The commercially valuable customer is not necessarily the person who downloads an app or opens an account. It is the customer who chooses the institution repeatedly: for payments, deposits, borrowing, investment and financial advice.
That makes depth of relationship more important than the headline number of digital users. Deloitte makes this distinction in its work on virtual banks, arguing that acquisition alone is insufficient and that the objective should be customers who regularly save, borrow, pay, invest and manage their financial lives through the institution.
Traditional banks should theoretically have an advantage here. Many have decades of transaction history, established customer relationships, trusted brands and enormous quantities of behavioural data. Yet possessing that information is not the same as turning it into a reason for the customer to stay.
A fintech with a narrower relationship may sometimes understand a specific customer need better than a universal bank holding years of information about the same person. That is where the next phase of technology competition becomes more interesting.
AI Could Tell Banks What Part of the Relationship They Are Losing
Much of banking’s discussion about AI-driven personalisation has focused on determining what product a customer might buy next. The more valuable use case may eventually be identifying what part of the relationship the bank is about to lose.
A customer’s transaction behaviour can contain signals long before they formally switch providers. Savings balances may decline even though income remains unchanged. Credit-card spending may disappear. Regular transfers to another financial institution may begin. Investment contributions may move elsewhere. A mortgage payment to another lender might appear for the first time.
Individually, these are ordinary transactions. Collectively, they can describe a changing banking relationship.
This is where customer data platforms, behavioural analytics and AI could become commercially important. Instead of asking only what should we sell this customer?, banks can begin asking what financial need is this customer satisfying somewhere else?
That requires considerably more than a recommendation engine. Banks need connected data, permission structures, reliable customer identity across products and the ability to translate signals into an appropriate action. Gartner’s 2026 research into banking customer experience notes that siloed data and limitations in legacy systems continue to prevent institutions from anticipating customer needs, despite the growing importance of personalised experiences.
The bank that recognises weakening engagement early may have an opportunity to respond. The one that discovers it when the customer formally closes an account may be years too late.
AI Could Also Make Comparison and Switching Easier
There is another side to AI that banks cannot control as easily. The same technology helping institutions understand customers can help customers understand the market.
Accenture’s 2026 banking trends research argues that banks’ ownership of the customer experience is coming under pressure as AI makes it easier for consumers to compare and switch between financial products. Its survey found that 65% of respondents were open to using a GPT-like financial assistant offered through a generative AI platform or digital wallet, while 71% would welcome an AI assistant within their primary bank’s mobile application.
This introduces a potentially significant change to banking distribution.
Today, a customer looking for a savings account might visit several bank websites and compare rates. Tomorrow, an AI financial assistant could potentially identify suitable products, compare pricing and features and recommend where money should move. The customer’s relationship with the financial system could increasingly begin with an intelligent intermediary rather than the bank itself.
That could make passive loyalty even more fragile. A customer who previously left deposits earning an uncompetitive rate because searching for alternatives required effort may behave differently when software continuously performs that comparison.
The bank is then competing not simply to keep the customer’s attention, but to remain the best option when a machine evaluates the alternatives.
More Features May Not Solve the Problem
This creates a danger for digital banking strategy. When engagement falls or competitors gain customers, the instinct can be to add another feature to the application. Yet there are limits to how much differentiation can be created through functionality that competitors can eventually reproduce.
A new budgeting tool, AI chatbot or interface improvement can be valuable, but it does not necessarily create a durable relationship. Gartner reported in 2026 that the top reason customers switched their primary provider in 2025 was a better web or mobile application, demonstrating that digital experience clearly still matters. But that also highlights how exposed banks become when experience is the principal source of differentiation: another institution can build a better one.
The more sustainable advantage may lie underneath the interface. Banks know when customers are paid, what they spend, how they save, what they borrow and how their financial circumstances change. Used responsibly, that information should allow an institution to become more useful over time.
A bank that recognises an emerging cash-flow problem, finds a more appropriate savings structure, prevents fraud at the right moment or understands when a customer’s financial priorities are changing provides something more difficult to replicate than another screen inside an app.
The technology matters because it enables that understanding, not because the technology itself creates loyalty.
The Primary Bank May Need to Earn Its Position Continuously
For decades, becoming someone’s primary bank was an unusually valuable position. Once salary payments, direct debits, cards and borrowing accumulated around an account, the relationship became difficult to unwind. Banks benefited from structural inertia as much as customer affection.
Digital finance is weakening that protection.
Customers can maintain several banking relationships simultaneously, and financial products can increasingly be selected independently rather than purchased as a bundle from one institution. Open banking, digital wallets, fintech platforms and eventually AI intermediaries can further separate the customer experience from the institution actually providing the underlying financial product.
That means being the primary bank may become less of a permanent status and more of a position that has to be continually earned.
The paradox is that banks need better technology than ever to compete in this environment. They need modern cores, connected data, sophisticated AI, strong digital experiences and faster product development. But those investments no longer guarantee customer loyalty because competitors are making similar investments and the same digital infrastructure is giving consumers greater freedom to choose between them.
The next stage of digital banking competition may therefore be defined less by which institution has the longest list of features and more by which one turns technology into genuine relevance. Banks already possess enormous amounts of customer information. AI will give them increasingly powerful ways to interpret it. The commercial question is whether they can use those capabilities to understand what customers need before somebody else does.
Digital transformation made banking easier. It also made banks easier to replace.
The institutions that succeed in the next phase may be those that recognise the difference.
What this means for the industry
- Digital excellence is becoming the minimum requirement: Mobile banking, instant payments and seamless onboarding remain essential, but increasingly provide entry into the competition rather than sustainable differentiation.
- Customer fragmentation may matter more than outright churn: Banks need to understand when deposits, payments, borrowing and investments are gradually moving elsewhere even when the primary account remains open.
- Share of financial life becomes a more meaningful measure: The number of digital customers matters less if those customers increasingly purchase their most valuable financial products from competitors.
- AI could become a relationship-retention tool: Behavioural signals can potentially help banks recognise weakening relationships and changing customer needs before conventional churn indicators appear.
- AI may simultaneously increase competitive pressure: Intelligent financial assistants could make product comparison and switching easier, further weakening passive customer loyalty.
- More features will not necessarily create stronger relationships: The deeper advantage may come from combining data, AI and banking expertise to deliver relevant actions at the moment customers actually need them.
- The primary banking relationship can no longer be taken for granted: Banks may increasingly need to earn their position continuously rather than relying on the inconvenience that historically discouraged customers from moving.
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