When it comes to high-end strategic advice, McKinsey is the gold standard. But
opining on what good strategy looks like is not sufficient to
explain the remarkable, and enduring, ubiquity of bad strategy—even,
it must be said, among McKinsey clients.
What, then, explains why the Best & Brightest, with an inexhaustible
supply of MBA’s at their disposal, so often bollix it up? To begin
with, "the basic assumption of modern economics—rationality—does
not stack up against the evidence."
It’s a long article, but if your firm is contemplating any strategic
departures, read it and read it again.