Involving "employers" is one of, if not the primary, root causes. I understand you're building a business, and ... you're playing in the same space as others. That may make sense financially, and allow you to take away from business from legacy insurers and save some companies 20% on existing costs.
But this doesn't seem like it's getting at the actual root problem, which is most people aren't actually involved in buying or paying for medical care (or... not until it's overwhelming).
I realize this is a national political issue, and not something a startup can actually address. The large companies, which could affect real change, have no incentive to legislate themselves out of business.
This (employer-provided health insurance) seems a perpetually intractable problem and seemingly unique to the US (based on my limited understanding of the problem space).
As a self-employed person, I'm basically an outlier and generally get little day to day benefit from any 'health insurance'. I paid $900/month (2 people) last year. 2nd covid shot caused a blackout, and I was ambulanced to an ER (I was actually only 'out' for less than a minute, but in less than 5 I was being driven away). 3 hrs in ER - nothing obviously wrong, so I was released. I got multiple bills over the next month for $4000. Insurance company graciously 'negotiated it down' so I only had to pay $2000, on top of the $11000 I already pay for this 'deal'.