Wendell Potter says insurance companies only out to please Wall Street investors . Cigna would make it hard to renew policies for some expensive clients , he says . Comment: Cigna says it does not purge and encourages business to compare rates .
Wendell Potter says insurance companies only out to please Wall Street investors . Cigna would make it hard to renew policies for some expensive clients , he says . Former PR executive left the company after teenager died awaiting transplant . Cigna says it does not purge and encourages business to compare rates .