Money is neither a thing nor a limited resource. Money is a political tool certain groups use to ration power and accountability. It used to be based on scarce objects, but now it's pure abstraction.
An important part of that is making sure insiders have special opportunities and backstops most of us don't. For the real insiders it's a rigged house. And for the most inside of the insiders it's impossible to lose more than token amounts.
You can be sure that whatever happens to banking, there will be people whose gambles will somehow miraculously be made whole while the rest of us are told "Oh dear, suddenly there is no money. Again."