Since Bitcoin essentially allows to "become its own bank", the responsibility for storing cryptocurrency lies mainly with users. A popular saying in the crypto community is "not your key, not your bitcoin", which means that whoever masters the key phrase of the wallet can control the coins in it.
"I think every major bank, every major investment bank, every major high net worth firm is going to eventually have some exposure to bitcoin or what's like it, which is gold or some kind of commodities," said by Legendary investor Bill Miller.