Heck, even if you want to blatantly ignore every other platform and site you can buy games from, which there are plenty, Valve gives devs a supply of Steam keys they can sell anywhere they want, they don’t even get a cut from those despite providing the bandwidth to distribute the files.
I think you mean holding a monopoly in the gaming space.
I think you don’t know what that word means.
Heck, even if you want to blatantly ignore every other platform and site you can buy games from, which there are plenty, Valve gives devs a supply of Steam keys they can sell anywhere they want, they don’t even get a cut from those despite providing the bandwidth to distribute the files.
They aren’t really a monopoly. You can purchase games elsewhere. They are simply the gold standard of gaming platforms.
A monopoly on what? PC game storefeonts? Itch.io, gog, epic, gamepass, some are better than others, but steam isn’t anti-competition