This is true that it is a likely reason. It is also possible that Gabe Newell runs his company in a very deliberate way because he thinks it's a net benefit to both his company and gaming in general. From what I have heard, which of course may be a flawed understanding of the man, it seems like he has certain principles. I guess the question is whether or not a person believes intent matters or only the end result.

Their VR is all open as well for the good of the universe. Perhaps have a little deeper look.

I don't idealize them, I use the other storefronts (gog epic) potentially more because they often don't sell games with any form of drm. I just don't get it because as far as my experience goes they're all about the same minus more jank on the other two.

I've actually spent the most time with Rockstar games launcher thanks to GTA V and RDR2 and that one is a real piece of work tbh.