Well I think it is clear that parking at Wal Mart (and other places like Cabelas) clearly serves a need and that RV parks will find it hard or impossible to meet that need.
But the whole paradigm of RV Park as "Resort" and the misuse of that word by so many in their descriptions and advertising maybe needs another look by the industry.
My guess the RV park of the future, at least near cities, will be all Automated pay and self parking, similar to public parking lots, not "Resorts" and offer a differing levels of service...elec only, with water or dry. High Speed WiFi will be there (as it should be everywhere by now).
this wont stop the Wal Marting by RV'rs...there is just too much convenience involved, but it will offer many more of a choice.
I think in the upcoming decade RV Parks will have to take a hard look at their business model and make some serious changes.