Rumors have it now that Bernie is looking into the idea of starting up a rival series to F1. Before people play the IndyCar card, have in mind that no other series ever had a furious Bernie Ecclestone in the other corner of the ring. So nobody can say how something like that will turn out. Bernie might have put in a lot of "backdoors" into the system that only he or a very limited few know about. Yes, it comes out very timely after Liberty hinted that Ferrari might lose the $100 million bonus yearly (and other teams too, but a somewhat lower bonus). But it also comes out at basicly the same time as Liberty axed Bernie. One thing is for sure, even with his age in mind, he's someone that might pull it off if he gets the right people on board to ""help" him. For me to really believe in this would need one or two more gearshifts. Right now this rumors rolls along in 3rd gear.
But, if it comes down to a development race regarding who fastest can introduce naturally aspirated engines back in to a premium open-wheel racing formula, then my money is on Bernie. Don't you find it strange that so many classic race tracks have disapperad from F1 in this millenium? It's not like a switch always worked out with money in mind. Turkey failed, India failed, Korea failed, Valencia failed etc. Maybe it was all done on purpose. Maybe that's one of the "backdoors".
The only thing Bernie would need to do is to lure over Ferrari, McLaren and Williams and make the rival series one second quicker than F1. Nobody would care if it's "green" or not.