I like Wolfire. Their head (David Rosen) had a really good procedural animation talk at GDC about a decade ago, their games are pretty good, and they started up Humble before it spun off on its own.
Before tarnishing their reputation, I’d suggest reading up on the actual complaints put forth in the lawsuit. I’ve done so extensively, I think they have very solid grounds to go after Valve (Valve’s behaviour is comparable to Amazon’s in terms of anticompetitive practices).
The entire complaint seems to be centered around the idea that you can’t sell the game for different price off platform. That’s demonstrably untrue. You can sell the game for a different price of platform as long as they’re not using steam keys. Which is hardly an unreasonable onus, It’s not hard to generate your own keys.
The other complaint seems to be about the 30% but again you can just distribute yourself. Of course then you have to fund all your own server architecture, that’s what the 30% pays for.
If that is demonstrably true, I’d like to see the demonstration. In fact, the case alleges the policy extends to non-key sales (see pts 204, 205, 207, 208).
This has already been raised in the European courts and has basically been beaten down that that there is no basis. Feel free to link to an actual court decision that proves otherwise.