You are conflating “what humans own” with “what you can get by process with side effect of killing humans”. Humans are not going to own any significant chunk of Earth in the end, they are just going to live on its surface and die when this surface will evaporate during disassembling into Dyson swarm, and all of this 6*10^24 kg of silicon, hydrogen, oxygen and carbon are quite valuable. What does, exactly, prevent this scenario?
You are conflating “what humans own” with “what you can get by process with side effect of killing humans”. Humans are not going to own any significant chunk of Earth in the end, they are just going to live on its surface and die when this surface will evaporate during disassembling into Dyson swarm, and all of this 6*10^24 kg of silicon, hydrogen, oxygen and carbon are quite valuable. What does, exactly, prevent this scenario?