If there was more of an emphasis on preventative measures that insurance paid for, I wonder if it would be different.
"As they are currently delivered, almost all of the prevention activities are expensive. If applied fully, using current protocols and the reference assumptions about costs (Table 2), they would increase health care costs by $8.5 trillion over 30 years (Table 3), or $283 billion per year, or $1700 per person per year (data not shown). The only cost-saving activity is smoking cessation."
You can read the full paper here. It's from 2008, so perhaps some entrepreneur will be able to find the breakthrough that finally bends the cost curve: http://circ.ahajournals.org/content/118/5/576.short
That said, it seems likely that insurance premiums will eventually be tied to real time health data, like Metromile is doing for car insurance.