It's so funny how this works. I remember when Steam came out (I was in HS) and it was extremely controversial. Everyone, and I mean everyone, hated it. "I need to start ANOTHER application to run my game?" It was slow, clunky, buggy, and basically a piece of garbage. It also started the anti-consumer aggressive software DRM trend (you basically couldn't share games anymore). In other words, it was a huge gamble by Valve.
There's few people I'd tag as "visionaries" in the software realm, but Gabe Newell is one of them. No idea how (maybe it was just luck), but he literally saw 10-15 years into the future. Very few people are able to do that: off the top of my head, I can only think of Jeff Bezos, Steve Jobs, and Elon Musk.