Banking is one kind of app where additional security constraints make a mobile app experience more convenient than a web app. Yes, you can do security stuff in a web app, no it isn't as seemless or nice as a mobile app. Everything else, sure, but anything that requires higher stakes authentication (beyond just buying things) I'm ok with it being a mobile app.
>>seanmc+(OP)
These additional security constraints come at the cost of remote attestation. There is a steep, steep price for this - you are trading your freedom in exchange for a very small convenience.