I mean, explicitly, beyond "companies are upset about hypothetical problems". Has there ever actually been a problem? Say, has anyone ever been sued for patent infringement upon using MIT licensed software?
That said, “Blue Oak” is a terrible name and will cause even more hassle than “Apache” when dealing with non-technical folks.
Explaining to the CFO that we license <component> to customers under “Apache” terms to avoid internal legal issues for our customers is... hard.