In the US MBAs are taught to value short-termism, so they'll come in, boost a business in the short term (often getting bonuses in doing so) even if it sacrific

In the US MBAs are taught to value short-termism, so they'll come in, boost a business in the short term (often getting bonuses in doing so) even if it sacrifices long term viability (e.g. loss customer loyalty/repeat business). Then they'll get a golden parachute on the way out as the business starts to crumble. So when people say "MBA have taken over" they're saying that the business is focused on short term over long term, and is in a downward spiral. It is the anti-Costco philosophy of doing business, and is extremely prevalent. For example, the old now unfashionable idea was that Customer Retention occurred by treating existing customers well and acting in good faith, this was a long term strategy. The new fashionable idea is just to make it incredibly difficult to quit, it boosts short term retention but makes it so customer re-acquisition is almost impossible (since customers remember how hard quitting was).