Maybe you could reserve the park. But the rest of my statement still applies. Besides, the original post didn't say where the person was from. Have you ever been to the Midwest? I come from an area where it's commonplace for people to have several acres... that's what happens when there's a low population density, public parks or not.

Having your own private 6 acre lawn is no different than companies creating their own private clouds. Plus, what if you had a family reunion and wanted to play a game of football or soccer? If you went to a park, there's a good chance you couldn't find enough space for your entire reunion plus whatever games you wanted to play. There's nothing wrong with having a big yard.