There is just a slight difference compared to Bitcoin. In Bitcoin you got less than 1000 people holding more than 50% of all bitcoins.... None of the assets above have such an unequal distribution of wealth.
http://en.wikipedia.org/wiki/Nathan_Mayer_Rothschild
Start digging.
It's much worse than in the real world.
Richest 1 Percent Control 39 Percent of World's Wealth
In bitcoin, the richest 0.05% Percent Control 50 Percent of the Bitcoin's Wealth.
That is not a reasonable comparison, given bitcoin's actual purchasing power (12 billion dollars for all bitcoins). If at the time when all of the world's assets are denominated in bitcoin and its market cap is several trillion dollars this wealth distribution remains, then the comparison would be valid. But as bitcoin grows the wealth of the top holders will flow into the economy and be redistributed. They will want to spend their wealth, not just hold onto it for the sake of preserving the status quo of vast inequality, which I am sure most of them realize is not healthy.