Enron didn't kill Arthur Anderson. Nothing is going to kill McKinsey. They're too intertwined with powerful people.
The only reason we haven't "another Enron" is because of Sarbanes-Oxley, not because Arthur Andersen was sufficiently destroyed.
- Arthur Andersen and Andersen Consulting split in 1989. It was an acrimonious divorce, with a long arbitration settlement finally concluding on 1 Jan 2000.
- That settlement gave AA exclusive use of the Andersen name. So Andersen Consulting changed its name to Accenture on 1 Jan 2000.
- Enron collapsed in 2001 and Arthur Andersen went out of business in 2002.
So it's not accurate to say that AA's consulting business continued at Accenture; the split happened a decade earlier.
See my other comment.