I thought I'd seen them all. Reminds me somewhat of that old Romance of the Three Kingdoms boardgame. The idea would definitely appeal to those who like nation conquering, except that there has to be more of a gaming element, rather than just collectible value - or the richest players just ruin the game very quickly.
Or the richest gets to win them all ? Sounds like a typical capitalist concept to me.
Either way,OP are you somehow affiliated with blockstates.io ? They have a fairly similar concept and they choose to offer New York City as their kingdom to conquer.The underlying concept is almost the same with a different country and their culture.