You only own 10% of the world if you can actually buy it with the money you have.

Comparing the money supply with everything you could buy with money, you will find that these numbers are a factor 1000 different.

Bootstrapping a new currency like Bitcoin where everyone got a little would have been nice. But while the imperfect distribution of the nascent bitcoin money may mean some lucky guys get 'unfairly' rich, it really doesn't mean there will be zillionaires that determine our future if bitcoin becomes de facto money.