I think business models fail and get disrupted when they stop serving their customers, adopt monopoly practises that penalise their customers, and technological advances disrupt the model.
A lot of people would say that all of the above applies to the banking sector which is why IMHO a lot of people are switching to crypto and blockchain technology.
In the long run would you rather rely on the opaqueness of the banking system or the relative clarity of a crypto based smart contract specified in code and deployed on a trustless network?