Look at the Tampa Bay Rays. They had one of the best records in Baseball this past season and they struggled to get 15k folks into that stadium on any given home game. There are talks of them moving elsewhere.
Tampa Bay is not a great sports city. Hell, the entire state of Florida isnt a great sports state IMO. A lot of folks there have no allegiance to those Florida teams. They go there to retire.
So this isnt surprising to me.
We are lucky our Saints still see near sell outs even during our lean years.