Anyway:
PS3 (2006) > PS4 (2013) = 7 years. 230 GLOPS >> 1,840 GLOPS ( x8)
PS4 (2013) > PS5 (2020) = 7 years. 1,840 GFLOPS >> 10,300 GFLOPS ( x 5.6)
So PS6 by 2027?
Well Moore's Law is more or less dead, so while ordinarily we might expect about the same again (x5 to x8) which should give us 10,300 * 6 or (61,800 GFLOPS so pretty close to RTX 4090), I suspect it will be less.
And for realistically all out RT even the 4090 is too slow. I'm sure some clever design will help (current RT is pretty much brute force after all), for those who want everything to be RT-only... PS7?
Purists wishing to ditch all the raster tricks are being totally unrealistic anyhow. Problem is that most RT I have tried has looked worse even if occasionally a bit more realistic. (I personally play games for fun not to look at 95% black screens no matter who realistic that might be - also don't fancy having my retina burned when a 95% black screen suddenly has a 1,500 NIT explosion.)
You forgot to add PS4 Pro 4.2 TFLOP (4,200 GFLOPS). Yes I see you are doing 7 years but the PS4 PRO also really needs adding to make the data complete.