I should clarify. Assume it cost $20m per individual to arrive on the surface of mars with 360 days of supplies. They claim one sq. km. They then have up to 360 days to develop their first one hectare plot before their supplies run out. It should take considerably less time. Then they start work on their hectare plots for resale.
The new colonist pays $20m more or less to get to the surface of mars and now has a choice… Bring along 360 days of supplies and arrive in the same situation as the prior setters or… bring 90 days of supplies (900kg) and 2700kg of things martians will be eager to buy and have a ready to live in hectare for $500k more for a total of $20.5m and still claim one sq. km.
A settler may not develop all 100 hectares for resale, but they can give what’s left to their children (who can each claim one sq. km. for themselves until that runs out after the first 144 million colonists.)
