> Today, the top 1% control fully half of the planet's wealth
This is a meaningless statistic given negative wealth is possible (indeed common). By this simple measure a recent MBA graduate of Harvard with 200k debt and no assets is poorer than a Mumbai slum dweller with 2 rupees in his pocket.
I would argue that's not a fair reflection of the actual comparative wealth of the two individuals.
A potentially better measure of wealth would be say energy consumption which is highly correlated with living standards.
Of course the other point is that whilst inequality may be increasing, if measured in absolute cash terms, is that a bad thing if the living standards of the poor are being universally raised? A billion people in India and China have entered the middle class in the last 20 years.
It's ironic that the perceived decrease in wealth of the middle class in the US is exactly because on a global scale inequality, at least amongst the middle 80% is decreasing: an increasing percentage of wealth created is being distributed east-wards rather than remaining concentrated in the historically dominant economic powers of North America and Europe.