Dietrich Mateschitz has had enough of the politics and stunts and changes.... he wants to go racing.
I would not be surprised to find others with the similar views.
Bernie has done wonders promoting F1, no doubt about that. I can now have conversations about it with just about anyone rather than having to seek out 'anoraks'. As a spectacle, however, he has ruined it.
A1GP tried and failed, but a breakaway "F1(ish)" with the likes of Ferrari, Mercedes, Honda, McLaren and Williams all taking part would be a different animal.