Perhaps they realized it would be cheaper to stop the growth of a superior product. Especially when that superior product would likely require more types of costs that would eat corporate level profit. More higher paid employees that can’t be mechanized.
Status quo is incredibly profitable, assuming nothing threatens it. That’s why big business does everything they can to increase the barrier of entry, and happily overpays to buy out successful competitors, with the leadership of the competitors having enforceable noncompetes for the model.
I am a rhythm game enjoyer, I’ve genuinely played Cytus. At this point I’d consider the best mobile rhythm game, but I don’t play it often as I’m not stuck playing only on a phone that often. Like, only play it on airplanes sometimes. I did fiend it for a bit when I first discovered it (10 years ago already?). Much easier to master than any other rhythm game I’ve played, might be part of why I don’t play it more.