Unrelated to gameplay, but I think one of the biggest way the game handicapped itself was by focusing on the PS5.
>Many people still own PS4 exclusively
>A lot of PC players have relatively weak machines
This significantly limited the number of people who could have bought the game and doing the same with Tekken 9 and the PS6 would be a repeat of a bad decision. Maybe even worse, because the financial situation would be worse, then what it was during PS5's release.