The penalties would undoubtedly been much higher if they didn't disclose it. Of course, perhaps it never would have been discovered, but whistleblower protections/incentives and high enough penalties for covering up issues can set the right balance.
It's similar to just about any other violation, really: if I injure someone accidentally—even through negligence—I'm going to get a much more lenient punishment if I don't try to cover it up or run away from it.
It's similar to just about any other violation, really: if I injure someone accidentally—even through negligence—I'm going to get a much more lenient punishment if I don't try to cover it up or run away from it.