Brother I already buy things on GoG lol.

Steam is great and all but ownership is far more important to me personally

Great! Not everything’s available there unfortunately. Some games release on Steam only even. So you probably are affected either way.

90% of people buy on Steam. And they do that because their entire libraries are on Steam.

You are straight up just using your opinion to justify a point and i won't have any further part of the conversation.

Translation: agree with me or you are wrong.

Earth is round.

What he’s saying is so blatantly wrong and easily verifiable that now you’re the contrarian.

Steam does nothing to prevent running non-steam games on any platform. Charge 20-30% extra on Steam and call it done.

It‘s not about platform compatibility or difference in fees. It‘s about the necessity to go through Steam (at competitive prices) and bow to whatever they may come up with in the future. The generic danger of a monopoly.

Charge 20-30% extra on Steam and call it done.

Steam doesn't let you do that. This is literally what the lawsuit is about.

Is there a monopoly though?
Other store fronts exist. They are usable and often sell the same games. It's not Nestle owning half the food options in every food store, this is whole foods, vs all the other grocery stores.

You can get game pass and stream your games and never own them past your subscription lasts.
Or the Microsoft game store which isn't great but exists.
GOG gives you installers and has big games on it.
Fanatical, GMG, Humble Bundle, are all store fronts.
You could even consider Nintendo and PlayStation to have their own game storefronts while needing their hardware.

Is Steam a monopoly?

That's most likely just cause they enjoy the auto downloader, patch tools and anticheat software that they can bundle in.

GOG has installers for AAA games like Witcher and Baldurs Gate 3 because the developers were better about giving the option. Heck lots of AAA games on epic.
We don't complain about PlayStation and Nintendo exclusives. Blame the developers for liking the easy features to only be on Steam. Ask them to change not Valve.

Off topic

Epic pays handsome sums for exclusives, can’t blame the devs for taking it. They go to Valve to not miss out on the gigantic market share cause it’s a monopoly. And I do complain about Nintendo and PlayStation exclusives

But they could release their own installer like CD project Red and other studios do. They don't want to miss out on the ease of the installer that enables a larger market share. That's not a monopoly. Literally.

No. The vast majority of potential customer will only buy if it’s on Steam. This is not about features, it’s about market access.

So is the issue that Valve kicks you off the platform if you sell your game cheaper somewhere else? That does seem a little troublesome. I don't think Apple or Sony has those restrictions? Apple takes 30% as well, right?

Right but that's an ease of purchase thing. They could buy elsewhere. The option exists, there is no lack of viable options and people still take it.
Not by definition a monopoly.

So you are angry that people are lazy and don't shop around too much. Your issue is with the consumer so you want someone to step in and force them different because you don't like their actions?

If a monopoly exists because the competition is incompetent it is still a monopoly. If someone offers a teleport service and it is the only one on the market because no one else can figure out how to do it, it is still a monopoly. I don’t want anyone to step in, I want customers/users to not defend the monopoly like it’s their favourite football club, to think about what can happen if they rely on the services of a monopoly too much and yes, to „shop around more“.

If I don’t like what Comcast charges I don’t do a class action lawsuit.

That's a poor example, because in many markets, Comcast (or another cable provider) is the only option, or there's only one other option with much lower top-end speeds (e.g. DSL). So a class-action against Comcast may be a reasonable idea, since they're an actual monopoly in many markets.

The games industry is different. Steam does have a commanding share of the market, but there's no real lock-in there, a developer can choose to not publish there and succeed. Minecraft, famously, never released on Steam, and it has been wildly successful. Likewise for Blizzard games, like Starcraft and World of Warcraft.

Maybe a better comparison is grocery store chains? Walmart has something like 60% market share in the US, yet I have successfully been able to completely avoid shopping there.

Sure. Not being able to sell literal Steam keys on other platforms for less on other platforms for less according to the terms is the same as being prevented from selling on other platforms for less at all, nevermind that Valve gets a 0% cut on Steam Key Sales made like so.

Also, there is no mention of said policy in either the OP article, nor the separate article about the lawsuit it links to.