Valve is good, but they have shit features and I’m not sure why you’re defending them (but maybe you’re just a troll/ignoring my points?).
I don’t care about the competition - it’s like saying a person is molesting a child but hey, those two over there are molesting multiple children and murdering them! So they’re worse!
Marketshare is also a poor predictor as it’s often the first person to market as opposed to what’s best.
Think of it another way - Google has the most marketshare of search. Is it the best and is it doing only good things? If you say yes to both then I can’t help you further.