Ferrari leaving Le Mans is sometimes simplified by blue oval groupies as "the GT40 kicked too much ass so they left" but it was more a combination of that and the F1 team badly struggling at the time that led Ferrari to conclude they could no longer support both programs. They picked F1 (and finally figured out the whole "aerodynamics" thing in the mid 70s)
On the other scale there was Lamborghini, who famously viewed motorsport as a total waste of money.
Last edited by sheddle; 07-28-20 at 06:51 PM.