I think that you and the writers of the article may be mistaking outrage for measured action, and that's hardly confined to the conservative set. Right now, the prime movers of U.S. politics are in reactionary mode, waiting to see what other shoes drop, in particular the extent and mechanisms used by the executives, boards, and auditors to deceive. They're right that greed is the common thread running throughout the scandals, but in most of the cases, the mechanisms used differ.... one books operating expenses as capital expenses, another books future recurring revenue streams as current income, etc etc etc.
There's some common threads in most of the cases, that being that a dishonest person in a position of influence convinces a compliant auditor to go along, all the while with the other control mechanisms which are supposed to be in place breaking down (board oversight, federal regulators, etc.). In some cases, the problem areas were identified long ago (e.g. accounting firms performing both auditing and advisement services), but other flaws and loopholes in the system which got exploited are still being discovered.
In short, the full extent of the problem is still being determined. Acting rashly may compound the problem. Not to mention that any "fix" which is implemented will only be able to make a difference going forward. Compounding the problem is the fact that many of the people who may be involved in putting the "fix" in for the broken system both helped create and benefited from how the system was previously set up, and you have a recipe for almost everyone concerned being timid in how they address the issues that Enron-type scandals raise.