I read the book a while ago, and the general point was that it is a misconception that capitalistic free trade was a driver of high growth in today's powerful western economies. These countries actually engaged in significant levels of industrial protectionism during key parts of their economic history.

I don't think the book was making a point about what is best for developing nations today, just attacking the the idea that laissez-faire capitalism built the US economy.

It's quite a good, short book, if you want to get a perspective on capitalism that's neither from a Communist or a university's Business & Commerce faculty.