[eagleinparadise]

I haven't studied this in depth but I recall that there's a book out there that sort of blasts the management consulting industry. How a lot of corporates will hire the same consulting company such as McKinsey to learn what their competitors are planning/how they are performing. IIRC

[takinola]

This is absolutely incorrect. Consulting companies, at least the major ones, will never let any consultant work for more than one competitor throughout their career. They also strictly forbid sharing any info learnt about a company with anyone else, talk less of with competitors.