This a million times over. Aetna makes huge money in the group business. By allowing insurers to take all the healthy people in group business, but absolving

This a million times over. Aetna makes huge money in the group business. By allowing insurers to take all the healthy people in group business, but absolving them from taking the sick people in a market, you essentially create smaller pools of "unprofitable" customers. But essentially it is a giant subsidy to the group insurance providers.