Except everything these days is moving to SaaS webservices, most of which are moving too fast and breaking too many things to bother with a process for delegated access with or without power-of-attorney (or with having any customer support process at all). This will sort itself out in the coming decades, but for now, you have to manage this on your own.
this was a big issue for me with crypto exchanges last decade. they could not understand the concept of anything besides a single-user personal account. KYC can only be tied to one account.
have a trust? LLC? non-profit? corporation? anything? whoosh, right over their heads
now? the exchanges all have this, pretty easy to onboard a whole hedge fund onto them now. but the crypto tax services, single-user personal account incapable of understanding other tax circumstances. there are ways (like exporting data to more robust software), just wish it was easier already.
Not to mention simple 99/1% split co-ownership of an actual corporation, so legal power to act on behalf of the business without the ability to takeover full ownership pre-death.
