T-Rex: Buying land means you own the ground! You own it so you can put a basement there. And clearly you ALSO own the space above the ground, since that's where you put your house!
T-Rex: By owning land, you own a tiny slice of delicious planetary pie!
T-Rex: But don't forget that the earth is a sphere! So just like pie, your slice of ownership is narrow at the tip (the earth's core) and gets wider as we approach the edge (the land you live on). But it doesn't stop there! You also own the space ABOVE the land, and that volume gets bigger and bigger as we get higher and higher, extending out into the sky!
Utahraptor: Land ownership doesn't work that way! There's separate mining and airspace rights.
T-Rex: For us, maybe!
T-Rex: But all it takes is one alien that doesn't put these limits on "up" for this to get CRAZY. The universe is ENORMOUS, and a distant someone's tiny slice of ownership could extend LIGHT YEARS wide, with all of Earth inside! And there's got to be conflicting land claims, Utahraptor. ALIENS WILL FIGHT OVER US.
T-Rex: And with rotating planets, the lands they fight over are constantly shifting, which mean NON-STOP WAR FOR EARTH from a near infinite array of alien foes!
Off panel: It could also just mean non-stop legal proceedings.
T-Rex: Once again, Utahraptor, MY version of reality is WAY more awesome