I am not sure how living on a rock in space translates to be rich... the rock has nearly ZERO value unless you can mine it and sell the results.
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Its even worse, the existence of pirates and Boskones make sure you have to defend your land... so as long you are not really mining, land will cost you money to maintain. On the other side there are many more asteroids than the Fen can ever take, so most of them might have some king of "negative value" for their owners...
(edit)
Its even worse, the existence of pirates and Boskones make sure you have to defend your land... so as long you are not really mining, land will cost you money to maintain. On the other side there are many more asteroids than the Fen can ever take, so most of them might have some king of "negative value" for their owners...