Myself and plenty of others at small or above size studios would have to make a huge leap into Godot and hope you don't run into any scaling issues. Not just from a project point of view, but integration on the artistic side.
LTS versions of Unity despite the known "un-fun" of it, are stable in a sense. Godot is moving fast, that isn't always a good thing for stability.
I'd love to jump on the new shiny and fun engine! But having to make the definitive choice for a company to make their next project in? Unfortunately just isn't there yet. "It's fun as a dev" just isn't a compelling argument for literally everyone else who isn't the engineer, compared to the number of all size studio pumping out Unity projects(Some even being successful!).