To be fair here you have historically been able to bork certain Qualcomm devices running legitimate ARM code due to them not supporting all the instructions th

To be fair here you have historically been able to bork certain Qualcomm devices running legitimate ARM code due to them not supporting all the instructions they claimed. (And the BSP would do sneaky things to attempt to obfuscate this). Qualcomm absolutely have the market power in the Android space to redefine a new open ISA if they want to though.