True, but who is setting the 50 unit limit? It's the people that already live there and don't want the riff-raff moving in and driving down their property values.

At the same time, if you own an lot full of RVs and mobile mobile homes in a rich suburb, you might end up running the numbers and deciding to throw all those people out, and put up some luxury condos, because you can make a lot more money per square foot.