Not enough to keep it thriving. ST and GA have nothing on One Piece. In reality, you need an expanding fanbase for that. Tell me, how many athletes made ST references in the Olympics? When was it the last time that GA made the international news? GA has viewers but no fans. ST will fall off too now that it ended with a gay guy sucking the air out of the room. One Piece still gains new fans. People make content about it all the time. There are dedicated channels. Yes, people will watch slop. Just not for long. Look at Marvel. Both the comics and the movies fell off the moment they became shit. Same goes for DC. Fans have a limit. Manga dominates because people like them. If they did not, they would have fallen off too.