I never get the arguments of cost when it comes to PC gaming. Put simply, if you want the best fidelity in gaming then it's going to cost.
I mean, I drive a Ford Focus ST. On the roads it's a beast, and is fairly cheap to buy pre-owned. But on the motorways it's out of it's league and playing with the big boys, the Merc AMGs, the BMW M3/M5, the Audi RS3,5,6. And if you want that power then you got to pay for it.
Same with TVs. Don't baulk at paying £400 for a PC gfx card, then go out and buy a £600 4k TV for your PS4 Pro. Especially when your Pro isn't doing native 4k unlike my PC. Your Pro is mostly rendering 1440p then upscaling to 4k using checkerboard rendering. Looks great, the technique is almost voodoo-like, but it's not 3840 x 2160.
Personally, for current-gen, I game on PC, PS4, Xbox One. Can't go wrong with that combo.