Interesting article indeed. Though I think the problem is a bit more complex in practice.
Consider that if you would make 1$ every second, you would need 11,57 days to reach 1 million.
If you would make the same 1$ every second, which, as you can see is not bad at all, you would need 31,7 years to reach 1 billion.
Now, the same 1$ every second would take you to one trillion in 31709,79 years.
The idea is that beyond one million, in order to grow by orders of magnitude,
in practice the problem becomes exceedingly to near impossibly complex.
The facts speak for themselves: as of 2014 there are only 1645 billionaires in a world of about 7 billion people and only 31 out of 1645 are under 40 years old.
So the wealthiest people in the world which account for about $6.4 trillion are 0.000001645% of the world population.
However I think one of the solutions to the problem may involve some necessary, though not sufficient characteristics like: measurement, leverage and a good deal of chance.
Again, here is probably one of the most substantive and concise essays I have read on the subject of making wealth. (Where the biggest part part of healthy inequality comes from.)
http://paulgraham.com/wealth.htmlFeel free to express some opinions.