[toyg]

> Land is limited, where is the FCC for land?

Lol, that's the government. You cannot "freely buy and sell" land, you have to follow certain processes to register your dealings and you are responsible for how you use that land (zoning, environmental laws etc). That's basically what the FCC does for airwaves, except they want to make sure you'll be "responsible" before they actually allow you to register your dealings.