It's definitely not an all or nothing thing. But these kinds of big shifts can be influential, as all the stuff out of White Wolf was.
Sure. But my point is the internet allowed a bunch of the fandom with their own preferences to reach each other and share their twist and tweaks.
So while official D&D followed a single path as a company can only really do that. And other 3PP can only follow theirs, usually redoing the past. There are other styles popular but not supported monetarily.. yet.
So each jump off is almost another generation. Pathfinders here. Shadowdarks there. Daggers and Steels on the ways.