Some parks are resident owned meaning they own the land in common so have control of their future. Some cities have rent control e.g. San Jose where it's about

Some parks are resident owned meaning they own the land in common so have control of their future. Some cities have rent control e.g. San Jose where it's about 3% max increase per year. The space rent is roughly the same as real estate taxes for regular homes and the price per sq ft is about a quarter. For seniors on limited fixed income a rent controlled mobile home park makes a lot more sense than paying rent or moving into the boonies. Some parks are horror stories e.g. the one next to Natural Bridges State Park in Santa Cruz where the space rents went through the roof (like $5k/month) when a billionaire investor (one of John Oliver's "assholes") bought it. Admittedly they are on the ocean.