Firstly, Philippe Legrain is to be applauded for taking on the challenge posited by countless texts from Klein, Hertz et al and trying to redress the balance of thought in this area. Not least since this is likely to raise a few hackles. However, in trying to tackle a full sweep of the issues raised by globalisation (economic, political, social and cultural) he produces a very basic and weak analysis of the subject.
Whilst he raises interesting issues (e.g. the real extent of US cultural impact globally), on a macro level, the book contains none of the thoughtfulness or insightfulness of analyses by commentators such as Hutton, Chomsky or Friedman and reads rather like a university thesis, rooted in traditional theories of economics rather than realpolitik. Surprisingly, for example, in this sort of book, there is no real discussion of US economic and political hegemony which is pretty remiss to say the least.
On a micro level, there is a plethora of texts on each each of subjects he raises ranging from the popular (Eric Schlosser, Fran Abrams) to the academic (e.g. on global standards for human rights) which provide much more thorough, detailed and on-the-ground analysis and which often contradict Legrain's theories. There are many, many examples of this through the book, but to pick one at random, in his review of whether major corporations are in a position to take unfair advantage of their size (whether financial, environmentally or vis-a-vis consumers and employees) one of his four mitigating items is that these companies have to comply with many government regulations and therefore are prevented from doing so. To support this, he notes that "the Federal Register, which lists US government regulations is 70,000 pages long"... and that's it for your analysis. No consideration as to the extent of compliance, what constitutes compliance, whether companies can successfully breach regulations etc. This is a crucial failing of book given that if the majority of theories and principles are not necessarily applied or adhered to properly in practice, then his analysis of the actual impact of globalisation is seriously flawed.
In short, buy this book if you want a quick snapshot of alternative thinking to traditional globalisation but do not buy it for any thoughtful analysis of the subject.