Caporegime
It isn't just going to be a case of once directml is finished/implemented, job done for the pc version too.... Work will still need to be put into the pc version with each and every game.....and as people have already mentioned, there is a "chance" that directlml version won't be as good as nvidias dlss i.e. either the performance uplift will be minimal or if it is drastic, expect IQ to suffer and if so, no pc gamer will want to use directml.
It's like what everyone kept saying when it was first announced amd would be powering all the consoles, "every game on the pc will run so much better on amd hardware going forward".... how did that end up?
DirectML is an open standard, Nvidia and AMD alike can use it, compare that with DLSS which is Nvidia exclusive and doesn't work on the consoles.
Nvidia's market share is PC exclusive, AMD market share is PC and exclusively consoles.
With that in mind which do you think is going to become "the" standard for this type of technology, DirectML or DLSS? What happened to Games Works? What happened to PhysX? What happened to G-Sync Modules in screens?
Nvidia keep trying to carve out a market for features where you have to be an exclusive Nvidia user, AMD keep throwing a spanner in Nvidia's "Works" by making these technologies available to everyone.
If you want any of Nvidia's feature technology to stick, ever, just once.... its Nvidia who will have to change their approach, its AMD's model, not Nvidia's which is successful.