unless a bank wouldnt serve you, like for sizable parts of the economy.
Sizable?
They do NOT have the technical skill to manage a bitcoin wallet. If anything it points even MORE to why we should not use crypto.
I don't expect most 10 year olds to have chequing accounts, and if we're talking about about all Americans I'm honestly surprised it's not higher, taking into account da yout, those who are mentally/physically infirm, and those folks who just don't trust banking.