Bernie and Co tried killing Sportscar racing and nearly succeeded by changing Group C to GT spec racing in the 80's. But.....
Look at Le Mans now compared to F1- packed grandstands, thrilling close racing, loads of overtaking, accessable, friendly atmosphere, great looking cars with 3 classes, Ferarri, Porsche, Audi, Peugoet, Aston Martin, Oreca, Pescarolo, Ginetta, Zytec, Courage, Chevrolet, Spyka, Panoz, Saleen, Ford, Dome..... with more to come including Toyota, Nissan and probably Honda in the next year or so. Best damn racing and the biggest party in the world. Sorry Bernie, you can't stop it!
F1 is doomed.