Bitcoin is different currency if ever we have an economic crashed or economic crisis, bitcoin will not be affected. The currency affected is Fiat money.
Crypto currency can help through subsidized the affected party through use bitcoin as a currency reserved to can pay all the debt of those financial institution affected
I want to believe in the scenario of a global economic crisis, a lot of people and investors will need to put their funds in places where they can still store value for their money. We all do not know yet how bitcoin or the likes will be serving at times like this, since this will simply be the first use case scenario in terms of a financial crisis, but one thing is certain, it was created for that reason and I believe it should serve that reason ultimately.