The thing is, while reliability of payment infrastructure matters, the UX and convenience of it does not as much - "everyday services" are not the core business of the banks (for ordinary individuals, mortgages and consumer loans is, for high net value, investments), they are pretty much a loss-leader that needs to exist but it's neither a major revenue maker nor a determining factor for customers - e.g. they will shop around for the mortagage, and if they get a good deal, they'll switch to another bank without even looking at how convenient their apps are.
Yes, there are some consumers for whom those everyday services are everything and they'll go to some 'app only' bank that does that well and without excessive fees. From the point of a traditional bank, that's not a problem, good riddance - if they don't use other products and aren't willing to pay excessive fees for everyday things, there's no money in having them as customers, and when they'll want to do something profitable (e.g. take a mortgage) they'll come back from that app-only bank as that product (the financial product, not the tech product) is actually competitive.
Note: this is from an EU viewpoint. USA may have a bit different perspective as the regulations there allow quite a lot revenue streams (e.g. bounced check fees) from people with no money and no other products, in EU much of exploitative payment practices have become restricted, so these customers simply become unprofitable and not really desired, the main value of "having them" is that this might help you sell profitable products to them later when they have more money and/or more plans for credit.
Yes, there are some consumers for whom those everyday services are everything and they'll go to some 'app only' bank that does that well and without excessive fees. From the point of a traditional bank, that's not a problem, good riddance - if they don't use other products and aren't willing to pay excessive fees for everyday things, there's no money in having them as customers, and when they'll want to do something profitable (e.g. take a mortgage) they'll come back from that app-only bank as that product (the financial product, not the tech product) is actually competitive.
Note: this is from an EU viewpoint. USA may have a bit different perspective as the regulations there allow quite a lot revenue streams (e.g. bounced check fees) from people with no money and no other products, in EU much of exploitative payment practices have become restricted, so these customers simply become unprofitable and not really desired, the main value of "having them" is that this might help you sell profitable products to them later when they have more money and/or more plans for credit.