"We're staying here and developing for all systems" er... I guess you must have missed the part where none of the games coming from MS are coming to Xbox One (State of Decay 3, Forza Motorsport, Everwild, Hellblade 2, Avowed, and Fable).
MS can't support the Xbox One forever, but all of those games will run fine on any half decent pc. Hell, I'm currently playing Ori in 120fps and 1440p already on my modest GTX1060.
Like I been saying for months. We won't see any exclusives really pushing Series X until specs equal or better than a RTX2080 and NVME SSD becomes standard among pc gamers. Maybe we'll see a massive price drop when AMD and NVIDIA's new gpu's come out and it won't be that long. But if the prices stay the way they are, next gen could be half way over until that happens.
From what I heard the RTX3070 will be on par with a RTX2080, so it's going to be interesting to see how much that'll cost. Especially since the prices of the RTX20xx card is expected to skyrocket as they stopped production and there's an increased demand from cryptocurrency miners.