@trini @hzulla That "standard way" was actually developed by someone, e.g. company or hobbyists, so cost money/time. Lack of such investment is not a scandal. It's really harmful language, because it suggests there is here some sort of malice or incompetence or just negligence. Basically it feels like years of mine and your work were part of that negligence. But no.
Our choices or economies are driven by demand and there was no demand for generic bootable ARM phone or laptop. Demand was for a cheap phone or laptop. There are BTW reasons why there is no x86 (laughing at Intel Atom) in embedded, IoT or phone/tablet market. That "general purpose bootloader and OS install" comes with a cost and there was and there is no demand for it.
Scandal would be if someone could not even develop that "general purpose bootloader and OS install", because of vendor lockdown. This is actually partially true for mobile market due to secure boot restrictions, but not for arm64 laptops, not for embedded/IoT.