I'm a long-time PC gamer playing at 1440p, but I just bought a PS4 Pro due to the great selection of games at the moment and to make use of my 4k TV. This has helped me decide on 3 things:
1) I really don't need any siginficant form of AA given how sharp 4k is, so DLSS at 4k becomes redundant (even though it's nice tech).
2) The reflections and lighting achieved in Spider-Man, which takes place in a city full of glass buildings, are fantastic. I spend an hour just looking at them and realised that Ray Tracing would really not improve anything in a meaningful way. Weather those reflections are 'accurate' is irrelevant when swinging by because you won't notice.
3) The PS4 Pro was outputting a new, gorgeous AAA game at 4k (checkerboard sure but lovely still) and I guess somewhere around 50 FPS (very playable, even though I'm into 144 FPS targeting for my 144hz PC monitor). This is all for £350. How can I justify £1,200+ for just a GPU which might get me 40% more performance?
All in all, as a value proposition, it really makes no sense. 4k gaming will always trump any small improvement Ray Tracing brings and makes DLSS less important, and as such the huge mark-up for these features is madness.