but that’s exactly what proprietary means … if i can’t play DOOM Eternal 2020 release on the M$ platform because i can’t afford a stinking M$ license that at “only” 150$ is HOME edition and severely limited then i AM FORCED to use a device that runs GNU/Linux … or … become a ONE-PIECE pirate 
the copyright world tells you that you ARE “free” according to THEIR standard … so you see someone is ALWAYS telling you that you ARE “free” according to THEIR standard … the question is WHOM can you TRUST … maybe add to that VERIFY, SUSTAIN, MANAGE, OWN, etc.