Many of those employed in private health insurance may find key roles in administrating a single payer system.

Along those lines: If a sudden mass of bureaucrats were unemployed: there is a (not so) coincidental massive shortage and generational gap in local governments across the states.

More than that though I think freeing up people's need for affording modern healthcare is a strong career incentive. The private healthcare system can have a restrictive effect for small businesses, especially small family businesses. It is one of the single largest expenses an employer has to account for which is bad for labor and bad for small business.

But that is great for large business that can absorb the cost more reliably. Also great for the insurance industry who are more than happy to negotiate a contract with a major corporation instead of administering plans for 1000 similar small operations. Which is a bit of a feedback loop as health insurance is big business.

I always felt that was one of the more compelling point, at least.