Regulation, government and big business
Love this analogy from Dooley Womack:
"I’ve always thought that regulatory risk is a lot like having Tony Soprano for a business partner. The U.S. government, our stand-in for Mr. Soprano in this analogy, may not have interests that are directly congruent with that of the business owner (as David Scatino found out in season 2 of The Sopranos), but there’s no better ally to have if you want to discourage competition."