My argument is that it was inevitable at the time, and everyone saw it coming. It was going to happen regardless of whether Valve created steam or not.
You literally state this:
Turns out it DID make everything a nightmarish hellscape of big brother-esque remote digital rights control where you never own anything you buy. Those 20 year old veterans ruined it all.
I don't think any of that is true. You can avoid most of the shitty DRM today and the big brother-esque remote DRM. People who adopted it then, didn't usher this in.