Hark gets it. I've said many times before that sweeping legislation like the ACA has winners and losers. Some people who had never had health insurance before are now able to get it for next to nothing. Other people saw their premiums spike to unreasonable levels.
Part of the reason for the spikes is that insurance actuaries had no historical experience to determine the correct premiums for all the new entrants into the health insurance risk pool. Some of those new entrants were young and healthy, while others were very sick and expensive to care for. The constant efforts to undermine the ACA have further destabilized the market. What would YOU do if you were working for a health insurer and trying to determine premiums? You'd aim high, naturally. Even then several insurers lost a tremendous amount of money on their ACA business in the early years.
Now that we're several years out from implementation, the markets are starting to stabilize and risk pools are becoming predictable. That's one of the reasons you're finally starting to see decreases in premiums from notable insurers like BCBSNC. You're also seeing the effects of shared savings programs implemented under the ACA, which rewards both providers and insurers for decreasing the costs of health care. When the costs of providing care decrease, the costs of health insurance decrease as well. Shared savings programs also come with medical loss ratios, where the insurer has to spend a certain portion of the premium dollar on the provision of care rather than administrative expenses.