These plans are often known as "Direct Primary Care", and from what I understand have to be approved by state regulatory boards (largely comprised of established or retired doctors) before a provider can offer such a service.

This would be a great alternative to "no healthcare" for the uninsured, even though it in no way covers catastrophic scenarios. At least it would provide general health/wellness and preventative care (what most people need on an annual basis) at a far cheaper price point than insurance premiums + deductibles.

Here's some more reading on this: https://www.goodrx.com/insurance/direct-primary-care