Well, there was at least one driver before Bianchi who lost control of his car in that race. True, it doesn't happens too often, however it is obvious if it happens to one driver, the same locale conditions can contribute for other cars lose it as well. Bianchi, unfortunately, was "the other" car. The idea to bring a SC in and slow them down was unfortunately completely out of synch with actual events. If a driver is not responsible and keeps his speed up, VSC controlled (electronically imposed) by a third party perhaps would have prevented...Bianchi drove too fast under yellow flags, the other 20 drivers kept it on track. It's also not Todt's fault that the tractor was within the bounds of the racing track although it should have been behind the barrier.