Big issue for me is the direction towards incentivised exclusivity. I can tolerate it on consoles (barely nowdays) because you're paying someone to use your hardware instead of another, and you have to specifically develop for console hardware. That takes time and effort.
Different distribution platforms do not have such issues, and I don't want exclusivity anywhere near PC gaming, unless you're self publishing. Frankly if they weren't banging on about steam using the industry standard % take, while they themselves are trying to undercut and use garbage tactics, I would have absolutely no problem with them, same as Ubisoft and EA's garbage store.