GM's deliberate cover up of of faulty ignition modules which resulted in dozens of deaths. (The mistake wasn't deliberate, but the systematic sweeping under the rug and ignoring the known issue definitely was)

That and banks get away with worse all the time, even ignoring 2008 which is hard to pin on a single actor. You have LIBOR scandals, HSBC violating sanctions with Iran - clear deliberate legal violations that result in fines and maybe some new regs but that's it. If you extend the criteria into gross negligence there are tons of horrible examples - BP spilling a gazillion barrels of crude into the gulf. Executives are forced to pull the golden ripcord a little early. The companies keep ticking.