Posted May 02, 2021

Not saying it's right,but that is the way the law works.
The mere existence of other stores or being able to set one up does not show that Steam isn't a 'monopoly' and, consequentially, that means there's no restraint of trade.
In the narrow sense of the term Steam is not a monopoly- but for illustration, neither was Standard Oil- but relevant laws do not actually use the narrow sense. And if we were going narrow sense then Steam would not be a Monopoly anyway, it would be a Monopsony (to whit, control of the marketplace in which things are sold rather than control of a product). In reality, you don't have to be a literal Monopoly to be done for monopolistic practices.
Under those circumstances Steam key resellers and those dependent on them for the majority of their money would then be Captive Supply, ie while nominally independent are in fact wholly dependent on Steam not cutting off their supply of keys and thus unable to actually compete and Steam's dominance of the market and leveraging of it to prevent competition by for example offering disproportionately good terms to big players (eg EA having a lot lower cut taken than a game from Joe Bloggs Software Inc) becomes both a Barrier to Entry ('you really want to miss out on 80% of the market??? While raising your own costs???') and susceptible to Anti Trust civil proceedings ('beneficial offers to big suppliers to join the Trust').
Not saying that it's a winning approach, in a lawsuit, but it's nowhere near as cut and dried as others are making out.
There is also the issue of Bundling as a loss leader/ trojan horse for market dominance, but that is a bit separate and I can't be bothered with it