The levels of regulation is huge, and basically culture changing.
Coinbase is basically trying to avoid becoming a bank. If it finds it have to then, hey great more competition, but really I think the idea that "startup attitude" will be allowed by regulators or (because regulators basically follow what society has decided it wants from its banks over decades of scandals and abuse) what the market actually wants
As an example, there are loads of (US) fintech startups that let you store some money and pay at a shop. Because these are not banks and debit cards, they charge the customer nothing but can scalp the merchant who can do nothing. The fintechs are just playing regulatory arbitrage. It might end soon in which case dozens will drop out and the biggest get bought by real banks for their brand name and cool factor.