I think it's more people retiring, more people with more money so they can afford an RV. And, the RV's are getting bigger and bigger. Many more Class A's now then ever before. Much more competition for large sites, which, at older campgrounds is a problem. Campgrounds are not being built quick enough for the additional RV's on the road.
The cost and red tape to put in a campground is enormous, no longer affordable for the typical small business to start. Your looking at well over a million to even open a small campground today. And if your a city the costs are more, if not in a city the costs for water and sewer is huge, IF you can get the required permits.
Not sure where the industry will be in the future, but it will be controlled by larger corporations, with deep pockets...and... will cost all of us more.
2011 Toyota Tundra double cab