When it comes to scandals cycling usually leads the pack. Between shit like this and dope-central its a wonder pro cycling still exists. Sagan is a badass,btw.
Though the arguement could be made that cycling is the only highly visible pro sport that has actionable concern about doping.
I thing it is the result of the fact that $ comes from sponsors and sponsors dont want to dump 8-9 figures of cash money, only to be told the win their team had has been taken away, or the star of the team has been suspended.
And then most sponsors are only there for a couple years. Brutal business and sport.