I would love if device makers were forced to open up their hardware to other OSs. Unlockable bootloaders for all as well as allowing users to install their own signing keys so secure boot can remain enabled.
Granted, there would still be black box firmware required to use half the components inside, but that’s another battle.
“But we’re selling the hardware at a loss, so letting you own what you paid for would break our crappy business model” /s