It only applies to steam keys.
A steam key is the receipt that you paid for the game. It is ridiculous that companies get to skirt laws by saying, “It’s on a computer.”
Imagine you buy a car. Years later you go to resell it for less and the manufacture claims you can’t because the sales receipt that proves you are the legitimate owner is a “Steam Cars Inc key” and therefore all existing laws do not apply.





Nope. MS was declared a monopoly because of marketshare and therefore had to add support for competing software.
Monopoly is from marketshare. How it is obtained doesn’t matter. Once you are the biggest company you need to have restrictions placed on you so that smaller companies have a chance to compete.