Don't worry, even if Unity fully abandons these plans, trust has been irreversibiley destroyed, and everyone is now aware that their CEO is an EA scumbag.
I doubt many people will start new projects based on Unity after this..
The only defense against the door-in-face negotiating technique is that the perpetrators have to end up worse than they started to dissuade them for trying again. For every hasbro forced to back down and then some, that's more power and dissuasion power to consumers, but for every reddit who gets their way with some superficial concessions that's a point of reassurance for executives who might consider trying it,