If we're moving towards real time tracing compute is going to always be a limitting factor, as it was in the days of pre rendering. Granted currently raster techniques can simulate ray trace pretty well in many scenarios and looks much better in motion, IMO that's more limitation of real time ray trace. There's a bunch of image quality improvements beyond raster to be gained if enough compute is throw at ray tracing, i think a lot of dlss / frame generation goal is basically to offload more cpu to generate higher IQ hero frames while filling in blanks.

Sure, but compute is a limiting factor.