It's funny that F1 tends to not take things seriously until they decide it's time to take things seriously. The safety issue is a prime example. They didn't put a lot of emphasis on safety until Senna was killed. But now look at it. It's almost sterile in that regard.
Neither did NASCAR until Dale Earnhardt got killed, and they had some big names die on the track. Fireball Roberts, Joe Weatherly, Adam Petty, one of the Allisons.