Not a chance. G-Sync isn't dead yet, and DLSS will be around for a very long time. You can get by with having proprietary software features when 80% of graphics cards use your hardware. RTX is at about 25% of the market (according to Steam) I think, and in another year or two it will probably be 35% -- including nearly all mid-range or high-end gaming PCs built in the past five years. I figure if G-Sync can hang around for several years after its primary competition mostly closes the gap, DLSS — which doesn't really have any direct competition yet, because FSR is quite different — will stick around for at least five more years. XeSS could kill it off, but only if it works as well as DLSS and also runs on Nvidia's tensor cores.