Sony should seriously consider a late start to the ps5. Current gen is way to good for them right now and the pro is acceptably powerful.
I have been thinking about this. I am ready for a new generation, but this generation seems pretty healthy still. I think Pro/X have helped the tech side of things - just this year we've seen RDR2, FH4, Spiderman and God of War. All absolute power houses in terms of visuals.
On the other hand, from a marketing standpoint - I'd want to strike while the iron is hot. People love PS4 at the moment - so that may help build success and hype for a PS5.