[sylware]

IP lock, my bad (in my native language it is the other way around).

Intellectual Property lock. ARM, x86(intel), x86_64(amd) have such extremely strong locks in countries where those are legal to be enforced.

It is said they literaly deny anybody else to use their ISAs unless there is a super strong power struggle and/or a giga-enormous amount of $$$ in the bargain.