Amazon's situation is that they drove prices up artificially through browbeating vendors by leveraging their considerable power. Items that used to be $10 are now $50. Unless you're suggesting Steam is really what are forcing AAA games to go up to $80, it's not the same situation as Amazon.

Steam is a textbook example of a natural monopoly. It seems like people have forgotten about this concept. Exclusivity is always a choice for publishers. They do not ever have to only be on Steam, and most games aren't. It's also their choice to rely entirely on Steamworks instead of using alternative technologies.

You could always choose to buy many of those indie games on GOG, Itch, or on other stores.

Baselessly defending Steam I see.

Considering you came in here arguing about something nobody said, I don't think you have the best idea of what other people are saying.

They control over 70% of the Market which is considered a monopoly even in the more stringent federal courts.

What is this disagreeing with in my comment?

The Steam Key thing was debunked years ago and not what anyone is currently talking about. Steam is on record in court lying on the stand about this

Okay, show where.

It is clear you have not studied this.

It's an opinion article about the complaint written from arms length, and it covers both the arguments for and against from that disconnected perspective.