When you look at some of these companies, their "rap sheet" reads like that of a crime syndicate. For instance, Tenet Healthcare (#10 on Jon's list):
1994 - settled fraud charges with 28 states: $380 million fine & guilty pleas on 8 criminal counts
2004 - $395 million paid to 769 patients for unnecessary surgeries & $54 million fine to the State of California
2006 - $725 million fine & gave up $175 million of Medicare payments for over-billing Medicare claims
2008-2011 - spent $3.43 million on lobbying, paid no taxes, received $48 million in tax rebates, despite $415 million profit and top 5 executives received $24 million/year