Suppose it has nothing to do with how success has been monopolised within the Premier League, just completely down to teams in the north being shit. The league really isn’t missing out from your Bolton’s or Blackburn’s not being in it, not to mention your Burnley’s, Hull etc.
If any clubs are then I’d say it’s your Sunderland’s, Leeds and a Sheffield club. And for quality of atmosphere you could definitely drop a Bournemouth, Brighton or Fulham.