I avoid buying from Steam and prefer GOG when I can because I don't really want to have continued access to my games collection be dependent on Gabe eating his veggies, avoiding saturated fats and doing at least a 30m walk a day to keep the risk of a heart attack low and look both ways before he crosses a road so as not to be run over by a car.

In almost 4 decades as a gamer and a techie I've seen plenty of good companies turn into evil companies and start to leverage whatever dependencies customers had on them to pretty much blackmail them into paying more, sometimes after the founders died, others when the founders cashed out or just lost interest in managing the company's direction and yet others because they were evil all along and just hid it whilst they built their customer base - enshittification isn't a XXI century thing, what's XXI century about it is that many companies nowadays already have it as part of their mid and long term strategy from the start.

Best avoid situations where you give power to some big company (for whom you as an individual customer are basically a nameless bacteria) over something you care about, unless you have no other choice, even if at the moment they're basically a benevolent dictatorship.

Better safe than sorry.

Valve is set up as a horizontal organization. I expect that to continue after Gaben's death. He doesn't really do much at valve these days anyway.