Lol, fuck Mac. If Apple cared about gaming, they wouldn't have created Metal and collaborated on Vulkan. Fuck them. Valve went with Linux because they can change it to fit their needs. Can't do that with Apple.
Microsoft is only supported by Valve because it has large marketshare and can't be ignored, but it's clear that Valve is doing everything possible to get away from them: see Steam Deck.
In general, I agree with Steam wielding too much power and if they abused it, I'd be out. I have my gaming hours and can live without gaming no problem. They wouldn't get any more money from me as soon as they enshittified.
What would get me away from steam is an opensource gaming store with games that have no DRM and are predominantly opensource. Or another gaming store that worked on Linux and allowed playing games with my other linux buddies.
Get us that and I'm out.
Have you considered gog? They may not be betting heavily on Linux or have as a big of a selection but their games are DRM free. You can even install gog Galaxy, a game manager similar to Steam.
GOG GALAXY 2.0 Open Beta is available for Windows and Mac. Please download the installer on your PC.
That's a disappointment, but Heroic Launcher is. I'll give it a shot and see if there are new games on there for me. The name "Good Old Games" gave me the impression it was for stuff like boomer shooters or side-scrollers and stuff.
Heroic works really well. I've just installed it myself recently, motivated mostly by a desire to finally play the free games I got off Epic. I've only installed two EGS games so far - Civ 6 and Guardians of the Galaxy - but they're working perfectly, running via proton.
The experience is so good I was actually inspired to buy my first game outside of steam in years, namely Wartales which I just bought yesterday on GOG. Installation is a breeze, it runs under proton, and as far as I can tell it is running perfectly.
I sort of prefer Heroic to Steam in fact, because it starts almost immediately - no waiting around for 30 seconds while it tries to connect to the Steam network etc