Maybe people-societies matter more than state-nations? If we think of nations the embodiment of large agglomerations of societies, then I would say a system that lets a given nation profit from another just because of something that happened centuries ago is unfair, and we would be better off without it. 

Something more granular and balanced would be fairer.

Of course, some people just want to get rich with their early investment, some people do not want to pay taxes... I see those two things as mostly orthogonal to the point above: get rich quick is probably a marginal characteristic of any open market. Taxes can be levied in a Bitcoin economy.