I think it could garner more support with a license that would guaranteed that it stays free instead of the MPL. With such a liberal license what would stop Go

I think it could garner more support with a license that would guaranteed that it stays free instead of the MPL. With such a liberal license what would stop Google or Microsoft to build their own proprietary browser on to of Servo? At this point releasing software under liberal licenses instead of (A)GPL is basically providing free labor for the tech monopolists.