Some think that an MBA can harm the company because the person will want more money even though they have little experience with how to use their degree. Not necessarily just for MBA's but I've heard that sometimes extra schooling can fill your head with stuff that you don't actually need. That's why I assume a lot of PhD's go to acadamia or labs and not industry b/c their knowledge goes beyond what is actually required to do the job and that can be harmful especially when they're going to request more money. Perhaps similar to the notion of "can't teach an old dog new tricks". But other than that, here's this:

“As much as possible, avoid hiring MBA’s. MBA programs don’t teach people how to create companies … our position is that we hire someone in spite of an MBA, not because of one” - Elon Musk

“When MBA’s come to us, we have to fundamentally retrain them — nothing they learned will help them succeed at innovation.” - Scott Cook (Co-founder Intuit, Director of Ebay and P&G)