Courts do not require a literal monopoly before applying rules for single firm conduct; that term is used as shorthand for a firm with significant and durable market power — that is, the long term ability to raise price or exclude competitors. That is how that term is used here: a "monopolist" is a firm with significant and durable market power.
I don’t think Steam qualifies still. There are still plenty of competitors such as GOG, Green Man Gaming, itch.io, Epic, Humble Store, Microsoft Store, and so on.
Steam accounts for 50% to 70% of all PC game downloads around the world.
The "significant durable market power" part is why I went on to explain how they don't lock you into their ecosystem. How can Valve raise prices or exclude their competitors when they literally do not have any mechanisms in place to do any of those things?
https://www.ftc.gov/advice-guidance/competition-guidance/guide-antitrust-laws/single-firm-conduct/monopolization-defined
I don’t think Steam qualifies still. There are still plenty of competitors such as GOG, Green Man Gaming, itch.io, Epic, Humble Store, Microsoft Store, and so on.
https://www.enterpriseappstoday.com/stats/steam-statistics.html
It being popular doesn’t mean it’s a monopoly…
The "significant durable market power" part is why I went on to explain how they don't lock you into their ecosystem. How can Valve raise prices or exclude their competitors when they literally do not have any mechanisms in place to do any of those things?