Yeah, if you're technical enough, then for now you can still install and run Linux. That's probably not an option for OP's parents.
You can easily imagine that in the future hardware manufacturers will remove the ability to install a 3rd party operating system. It's already essentially impossible on a locked-down Apple iOS appliance.
You can easily imagine that in the future hardware manufacturers will remove the ability to install a 3rd party operating system. It's already essentially impossible on a locked-down Apple iOS appliance.