It's not anticompetitive to try and foster fields of software in which your competitors are underinvested/underperforming/disadvantaged. AMD is trying to do the same thing right now - AI/NPU is an area where they think they have the lead over Intel, so guess what, they're selling AI now. AI hardware, AI software...

As far as typical gameworks examples, I am specifically thinking back to tessellation - everyone freaked about Crysis 2 (despite the fact that it didn't actually use max-LOD or no-culling during actual gameplay) or Hairworks. All of a sudden it stopped being a thing, around the Polaris/Vega era, right? You know why that was?

Because AMD finally fixed their tessellation performance. Their hardware was deficient and underperforming, and the problem went away when they fixed their hardware.

The same is true of the software today. AMD's problem isn't that NVIDIA is stomping on their fingers, it's that ROCm crashes when you run the tutorial/sample programs.