Crypto and blockchain by itself does not solve any of these problems. It's merely a payments system that happens to be on a computer natively. There's nothing technical preventing banks from getting together and making Open Banking a well-supported thing like they're supposed to be doing; it's all just code and contracts in the end. It's not that they can't, it's that they won't, and they won't for business and political reasons. Crypto is subject to the same pressures but doesn't have the same regulations to constrain their actions. Crypto's better ability to eg do international payments is not because of any technical reason but simply because they don't have the same regulations and inertia of the traditional banking system. While the traditional banking system has problems with its regulations making things too hard to do, many people prefer it to the easier to screw up wild west of crypto payments. Lots of people like the FDIC making sure their savings aren't wiped out if the bank lies on its balance sheet, or the ability to claw back money transfers if someone breaks into their account. Crypto could certainly provide those services and backstops, but they haven't yet, and based on the prevailing attitude amongst the major participants, it's unlikely they will anytime soon. The only real difference between crypto and banks as a payments system is whether or not you want to start from scratch and build up, or start with the existing morass and tear down. The latter is the safer option which many people prefer when it concerns their money

The idea that I’d need anybody’s permission or a regulation to allow me to give my money to somebody else is the problem.