Why not just watch porn?
Honest question, not trying to sound condescending. It's just that you don't really gain much of anything by playing these games. At least in porn games the gooning is somehow tied to the actual game but that's not the case with gachas.
Why not just look up the skimpy outfits that these waifus get with every event and jerk off to that? Would save both time and money

>start a project
>run out of money midway through
>sell your studio to a giant gaming company
>fuck around for 3 more years while failing at development
>get your studio shut down in a random round of layoffs