[joe_the_user]

The revolution could be the government bitting the bullet, and spending a fortune on bootstrapping a public health system that undermines insurance and private health.

Or, uh, "Medicare for all", since medicare is an existing, functional single payer system (not actual "public health system" but still, there, works already for a significant fraction of the population, is an existing proposal.

We just need to give up on the sunk cost fallacy and go with proven models.

This, definitely. It's worth saying "sunk cost" arguments often go more with entrenched interests than any actual benefit. Unfortunately, this doesn't make them easier to counter.