The government controls on something like auto insurance are far less than those instituted by Obamacare for health insurance.

Indeed? Based on everything I know on the matter, you're wrong. First, the entirety of regulations governing auto insurance are substantially more restrictive than those of the ACA alone. That's pretty much inarguable, the ACA does not single handedly do more to regulate health insurance than over a century of regulation promulgate independently by all fifty states. Second, due to the McCarran-Ferguson act, virtually all auto regulation occurs at the state level. Making blanket statements about auto insurance while ignoring how vastly different Michigan is from Maine is from Massachusetts is foolish.

But, most importantly, no, they're really not that different. Tell me, how many auto rate filings have you submitted in your life? Personally, I've done more than a couple, as I'm an actuary, an FCAS, who oversees pricing at an insurer which sells, among other lines, auto insurance. And while the specifics of who is doing the regulating and how do vary, the broad concepts are very similar. A P/C insurer may not be required to limit the expense and profit portion of premiums to a fixed amount like a health insurer, but they do need to demonstrate that the profit provision is reasonable based on company loss costs and expense structures. Many states even dictate what is considered a reasonable rate of return and prescribe a methodology to use for calculations. That's true, to a degree, for most types of insurance, but few are scrutinized to the degree auto is. And that's just one tiny part of auto rate regulation, but it's a fairly prominent part of the ACA.

Honestly, the P/C and health segments are so similar that, since the SOA and CAS announced a potential merger a couple weeks ago, I've seen several individuals advocating merging FCAS and the FSA health track into a single unified track (though there's very little chance of that happening for numerous reasons).

But please, do explain what I'm not understanding about insurance regulation. I'm genuinely curious.

Your life and health are the main incentives to driving safely. Not the fact that your premiums will be lower

First, feel free to actually, you know, read my post. Go ahead, I'll wait. Because I did specify a financial incentive. People can be motivated by more than a single factor. Second, have you ever heard someone with a DUI give advice on the matter? One of the biggest reasons they typically give to avoid them is how incredibly expensive they are. Probably far more common than personal safety. Financial incentives absolutely drive behavior. I would have expected someone like you to understand that.