Whilst I agree with much of what people here are saying, I doubt the league or the clubs care. As long as the grounds keep filling up, people buy the shirts and the TV rights/sponsorship money keeps coming in they’ll be happy.
The top clubs can happily fill their large stadiums with day trippers. You cannot underestimate how popular the Premier League is globally. Even if its popularity wanes here (not personally convinced it wil), there’s still a huge fanbase overseas that will keep the money flowing.