I still see GT Sport as a "Prologue"-substitute with the low car and track count and as it's not "the
real GT7" (yes, I know Kaz has said that GTS is basically GT7, but he talks a lot of half-true non-committal stuff), I think PD should be allowed to try out stuff like a one-off iRacing-GT game that is laser focused on driving against other humans according to real world racing rules.
It could be a disaster, but who cares(!), it was just a "prologue" anyway and we'll get the normal GT7 in 2-3 years. But what if it's completely addictive and gets more and more people sucked in with positive word of mouth, because it's something very different from other games and very hard but extremely rewarding to master. Maybe then they could even build this into a proper GT7 over time - "games as a service"-style - and have a steady cash-flow while also helping Sony to keep people paying their online fee month after month (I cancelled this month and GTS currently is the only game that might have me sign-up again).
Or if the game is a success, they can scale up their team and have both concepts in the pipeline at the same time.
If they wanted to size up their team, I doubt that "success" and "money" is the problem. They haven't figured out how to "mass produce" cars and tracks in parallel the way Turn 10 does. But if that means that the content they have isn't just "type in wheelbase, spring and spring values" for a new 3D model with copy and paste engine sound, but actual detail work that is unique to some cars like most of the PC sims try to (especially iRacing and Assetto Corsa), that's a good thing. Quality over quantity for me please.