Before I respond to this argument, let me comment that I found your argument interesting and well-reasoned, just wrong
All right. A few issues:
Also note that, according to your argument, people join society to avoid physical harm and theft. Thus, society should have the right to protect them from physical harm and theft, but why anything else?
EDIT: Crossposted with Rambuchan. I look forward to reading your response. Many economists have expanded on Ricardian theory, but Haberler's "chain of comparative advantage" theory (1930) is as good a place to start as any.

All right. A few issues:
The conclusion does not follow from the premises. Society protects and provides preconditions for the achievement. It does not cause the achievement.So, consider this: No one can get *rich* outside a society. Not only we are hopeless against assault outside its protection (its impossible to stay permanently alert), but also its impossible for a single man to achieve, without benefiting from other people works, the kind of fortune we see people having today. Therefore, its safe to say that, in many aspects, society is the cause of such prosperity.
Also note that, according to your argument, people join society to avoid physical harm and theft. Thus, society should have the right to protect them from physical harm and theft, but why anything else?
Why? Bill Gates made major contributions in an area crucial to the welfare of his society. Many fewer people would have computers if he had not been born. Of course, part of it is luck. Others might have done as well in the same situation. But hey, luck happens. Some are born talented, others aren't.Is this possible for a man to be worth, alone, as much capital as, for example, Bill Gates? Of course not.
Not really, no. See link: From the neocon stronghold of Berkeley.especially [an income inequality] that is increasing as we all seen to agree here.
EDIT: Crossposted with Rambuchan. I look forward to reading your response. Many economists have expanded on Ricardian theory, but Haberler's "chain of comparative advantage" theory (1930) is as good a place to start as any.