>>148986677 (OP)He probably has. Remember he said he pitched 16 shows to netflix since Kid Cosmic ended and they all got rejected. There's a decent chance some of them were adult shows or at least skewed towards older kids. He only went back to PPG and Foster's out of desperation. It's hard fo underscore just how truly fucked the western animation industry is right now.
If the question is why he doesn't specifically go to adultswim now that he's done with netflix? Probably because PPG is safer and he has a family to feed.