Hopefully this will encourage the use and development of Godot and other open source engines. If Unity doesn't back off, I don't see any other possible reality.
OSS isn’t tenable as a competitor to any real engine you want to ship big games on. Just the QA testing budget alone that is required to support all consoles, PC/Mac, iOS and Android outstrips the budget of even Godot. What we need is a VC backed, for profit engine, that is up front about taking 2% of revenue after $1mm for perpetuity. And only being an engine company. Period. And like Unreal, source available, just…
So that aspect would not be OSS.