This book is more than 1000 pp., here are my impressions:
1. About 600 pp. of this book is a carefully done history of the accumulation and sometimes dissipation of wealth and property. You can evaluate that material without reference to any particular set of political views.
2. At some point the book veers into partisan issues such as the wealth tax. Many of those parts remain interesting, but it also becomes clear that Piketty is “out to lunch,” to wit (p.591):
To return to the Soviet attitude toward poverty, it is important to try to understand why the government took such a radical stance against all forms of private ownership of the means of production, no matter how small. Criminalizing carters and food peddlers to the point of incarcerating them may seem absurd, but there was a certain logic to the policy. Most important was the fear of not knowing where to stop. If one began by authorizing private ownership of small businesses, would one be able to set limits?
I can think of a less naive explanation of Soviet attitudes toward the private sector. Piketty also calls for “participatory socialism” (p.592), a dubious doctrine not to be confused with say Nordic social democracy. For instance, Sweden (among other countries) seems to have fairly extreme wealth inequality.
3. The sentence “Real wages are much higher in America than in Western Europe” does not come easily to his pen. Nor does “The United States is a remarkably successful innovator, let’s see what we can learn from that.” Or even “Raising wages is more important than merely limiting inequality.” Those seems to be banished thoughts in the Piketty intellectual universe.
4. The sections on Soviet and socialist experience can only be called “delusional.” In his account, if only a few political decisions had gone the other way, the USSR might have ended up on a path similar to that of Norway (p.603 and thereabouts).
You know, maybe you think that the inequalities of the current day are much worse than people had been expecting. but that should not revise your view of socialism and the Soviet Union, two matters fairly well settled by historical research.
5. Give these lenses, it is impossible for Piketty to offer any commentary on recent events (about the last 400 pp. of the book) that is anything other than distorted and unreliable. There is massive distrust of the wealthy in this book, and virtually no distrust of concentrated state power.
6. There is a considerable sum of useful and valuable material in this book, and I would not try to dissuade anyone inclined from reading it. Nonetheless I suspect its main import is as another sign of the growing compartmentalization of academic discourse — good work intermingled with highly questionable partisan material — and how so many academics, if the mood affiliation tilts in the right direction, will tolerate or even encourage that.
You can pre-order the book here.