The Economist has an interesting report on how the big health insurance companies have been thriving under ObamaCare:
the share prices of America's five biggest health insurers—UnitedHealthcare, Aetna, Humana, Cigna and Anthem—have all roughly tripled over the past five years. The big insurers have been consistently and highly profitable (see chart). Unlike most big American firms, the trend is still upward. All five will probably report record profits for this year, next year and several more to come, predicts Ana Gupte, an analyst with Leerink, a research firm. For that, they owe a debt of gratitude to an unlikely creditor. The results of most financial firms may have buckled under the weight of new regulation, but health insurers appear to be thriving in the complicated new regulatory environment. ...the barriers to entry in the business are huge.
The Economist points out that this may not be so good for consumers, either the individual patients or the employers who buy insurance.