[bartaxyz]

That I see as a likely outcome. Though companies may still offer an option to have a secured wallet (non-custody) for longer term storage of value. There aren't many but there are a couple of options like that out there where you give custody of the funds where you want ease of use or automation (trading, savings plans, etc.) and then have non-custody as part of the same service where you store whatever you don't want to give the custody of.