Remember that people buying expensive GPUs tend to also have expensive monitors, which tend to offer have higher refresh rates, which DLSS can help make use of.
I really hope DLSS like tech is adopted by both Intel and AMD. Ideally FSR will go through the same evolution as Vulkan and eventually be the frame work that includes solutions from all vendors. There are already rumours that FSR is nothing more than the framework for a ML capable RDNA3, which does make sense to me.
Today, DLSS > FSR in high end, while FSR > DLSS in lower end for obvious reasons, Gsync > AdaptiveSync as I can't find a decent AdaptiveSync panel that doesn't have issues with flicker and PhysX > No PhysX as I was just thinking the other day how good Mafia II looked when I got a 980Ti.