There's Vulkan. And the "hybrid" thingie is crazy fast in RPR. No RTX needed. Like EEVEE with tracing ON seriously, no joke. They even stand ready for USD . Octane also going for it.
I think it ain't worth competing for milliseconds with the world and along loosing quality.
For example, newer Sobol is PITA to look at, doesn't clear as fast as it used to... just MHO.
So why not really working on better UX, faster flow, fixing bugs, getting that trailer out of the garage, getting along with amazing shaders, materials & tonemapper like fStormers (yes, Blender sucks in that regard and even RTX cores can't help with shading complexity)... And get things ready for long winter nights after solstice... keeping it in focus with 20/20 vision.
Why not? It's not like suddenly a mass with billions will start pouring in