The FDA has set the criteria for who can and can not get an implant. While more people are getting implants it is only a small drop in the bucket for an insurance company. Far more money is spent on disease that is caused by the obesity epidemic. The FDA sets the criteria for implants and if any insurance company bases their criteria on profit they are only going to get sued.
Speaking of Profits. Anthem is in hot water for raising rates for individua subscribers by upto 39%. Anthem is not hurting. They made 4.7 BILLION in profits. This figure was from an article in the SF Chronicle from Wednesday Feb 10, 2010.