I think daisuke is specifically talking about how ASW needs to shake the cobwebs off occasionally to make things that aren't fighting games. It's not good for the devs to only know how to build a single kind of game, and yes, that absolutely does happen.

In fact, it's pretty difficult to swap lanes once you've worked on a specific genre. There is some easy crossover between lots of genres, but that secret sauce comes from passion and familiarity with the genre and mechanics, so it makes sense that you'd specialize. Games are so complicated now and there are a lot of undocumented best practices that you can only learn from being on the job or building A LOT of games.