Did you even read your own link?

A natural monopoly is a monopoly in an industry in which high infrastructural costs… give the largest supplier in an industry…an overwhelming advantage over potential competitors.

This is for like, cell tower companies and stuff where infrastructure costs are in the billions. A game store has no infrastructural costs in excess of any other business.

You can’t just call a business a monopoly because it costs a lot of money to compete with them.

You’ve replied to me 3 times now without ever answering my question about what anticompetitive measures Steam has taken to remain a supposed monopoly and thus I’m left to assume you’re just trolling and will have to end this conversation. Goodbye.