Piketty asserts that capitalism is "inherently unstable because it concentrates wealth and income progressively over time, leaving behind an impoverished majority. ..." He proscribes even an international wealth tax and higher income taxes, above 80 percent, to redistribute rather than to invest savings. This would essentially create a state monopoly on wealth. But again, history tends to demonstrate that state monopolies create poverty for all but the politically connected elite.
Even the Soviet Union, a military superpower, was brought to its economic knees by state monopolies. Communist Party Secretaries, Andrapov and Gorbachev, were forced to the recognition that free markets should be introduced within Russia. This led to 'Perestroika' and 'Glasnost' and the freeing of markets in Russia.
By concluding that capitalism, even if it is confined to just a few countries, will lead to increasing poverty among the masses around the world, many cynical observers may conclude that Piketty is laying out a carefully planned case towards global socialism along the lines first attempted by the Bolshevik Commintern. Some conclude that such a move could be spearheaded by international institutions like the UN and IMF.
To achieve inherently unpopular global power, national elites must cooperate to bring about such levels of economic chaos and human suffering that people, despairing of ineffective democracy, will look for strong, global government as a welcome solution. To achieve this end the economic problems and human suffering must be extreme and seemingly beyond solution by any national government. By continuing to debase and destroy fiat currencies while preventing the markets from healing themselves, central banks around the world are doing their part to create these conditions.
However, those who look towards strong global government must realize that likely it will lead to a world of extreme global inequality in which any effective opposition will be impossible. This is the fascistic face behind the cuddly and concerned image that has made Piketty the economic North Star of a new generation. These faulty bearings must be corrected or the world's poor will suffer far more than they need to.