You. Can't. Ban. crypto!
People need to stop thinking and perpetuating the falsehood that banks have any say in the cryptomarket. The whole reason crypto exists is BECAUSE it is decentralised.
Banks are running scared - they don't want people piling into crypto leaving them without business.
Honestly, if they embraced it and provided their own platform, etc. it wouldn't necessarily kill business. They'd effectively turn into an online wallet that can make loans, etc. from the collective amount they hold. Plus they'd be able to make certain guarantees about security and your money would be insured, assuming that the government actually gets around to accepting the fact that crypto isn't going anywhere.