Great question, well it seems to me like the colonisation of the world in the past. First come, first live, the owner. Other questions on my mind are - what about the leadership, who will be the decision maker at the times, what currency or change of value they will use (probably some cryptocurrency such as Mars coin 😃)

I started with The Mars story, you might find it interesting, check my blog, its a story about the flight to Mars, its just started.