If for-profit healthcare is allowed then it could be regulated like banking, with requirements to prevent failure (including requirements for financial health), and if there is failure, to ensure customers are protected and provide for continuity.

Like banks, failure of a healthcare institution can be destructive for its customers and the community. If a bank goes under, especially a significant one for the community, regulators see that it's acquired by a surviving institution - often with only a weekend of downtime.