I hope he thinks about the implications to each business he consults before he starts crossing inventory out willy-nilly. Most of the time, it might make sense, and certainly, it's good to question whether you need it.

But just doing so to optimize solely on cost might be a local maxima. You might impact other less tangible aspects/dimensions/parameters of the business in a negative way, and usually other people have to suffer at the hands of MBA's decisions.