As a local, the idea that this is just "one big event a year" couldn't be further from the truth. There has been complaints about amount of pressure for over a month by people out there fishing everyday. The amount of pressure is growing every year and its not just the one 400+ boat tournament. I would highly doubt any local businesses are making or breaking their year on the 3 days of the BBT. In fact, most of their cash cow shows up late next month.
At this point, to my knowledge, there is nothing stopping this event from being a weekly or monthly shindig. LOZ does something 2x/year, Grand 1x/year, BBT is multiple lakes. Heck smaller outfits are even running this type of tournament. Who would consider Holiday Island a location for a big bass tournament setup but they do it. Obviously there is a ROI so what prevents it from becoming a one big event a year to a non-stop onslaught.
I think Fish's concern is that he is just a hop-skip-n-jump away on a lake that was much like TRL was years ago and he gets where things are headed and he doesn't like it.