I envisage that time too. Maybe not from 10 years from now but starting from 20 years from now, then I will agree. So, there is a possibility for that, your question is not asked in vacuum therefore.
Why not 10 years from now The laws. It has to have some legal understanding that will not only bring more of adoption and usage but that will give rights to parties ; the banks, customers and government. This will give a backing to some remedies if there is defaulting parties.
Such laws will also stipulates the relationship between fiat issuing and bitcoin/crypto transactions too.