The PS5 PRo is a missed opportunity.
The Launch PS3 was really expensive too. BUT, it could play PS1 & PS2 games next to PS3 games. It replaced all of the earlier systems.
Imagine the PS5 PRO was launched being able to play EVERY generation of PS games. From PS1-PS5. It would need a discdrive standard though, but imagine all PS1-PS5 discs would simply work. Having such a system replacing 30 years of hardware would make me buy this system even at EUR 800.