I have not noticed that license change, but cool, easier to manage releasing very cheap little casual games.
the source code access of UE4 is also fun, user feedback based bug-fixing and feature development became a proven way last month. for an ordinary user it is not really needed, but can attract many indie developers and larger studios.
game engines targeting rather beginners, students, and hobbyists seem not to react on these changes (or just waiting), and probably they are right as they are a bit different market segment, focusing on easy start and basic usage. I wonder how 3dgs price policy goes in future, maybe stays as is, but it could easily be a more potent engine than currently (okay, the pc only publishing is a bit odd today).