I'm not convinced that ruthlessness is a particularly good quality for managers of big companies to have from a societal perspective. Certainly there are ways in which it helps them compete against other companies, but not necessarily in ways that make them more wealth-productive.

I finished reading this book not too long ago, and it may be that it's primed me to be too cynical with regards to the value of ruthlessness in business, but it's certainly the case that there are a lot of ways to get ahead in the market by putting aside moral scruples that leave society as a whole worse off.