I mean, yes and no. A book review might better state "Lewis-Kraus argues that 'Silicon Valley trade is also pretty close to being zero-sum'," instead of saying:
> The Silicon Valley trade is also pretty close to being zero-sum.
On it's face, that statement is inaccurate. The rest of the paragraph looks to argue that returns are estimated value zero, not that the system itself is "zero-sum." So now I don't know if it's the review that's bad or the book.
It's a book review, not wikipedia. If you want to see the argument made in full, buy the book.