I'm sure this will make their company a short term gain in profits, but in very short order no more Unity games will be made. Even if you accept the terms they're proposing, you know damn well they are willing to change the rules at any time at your expense.
Unity just became an extinction-level-event liability for any game company. Who would dare touch it with a ten foot pole?
The leadership will be ousted by their shareholders quickly enough, I expect.