I worked at an entity with 300+ thousand employees and Probably another 200k retirees… I was able to pay full cost to retain my health insurance from them.
The benefits and out of pocket costs are incredible - my current CEO asked me why I do that rather that use the company insurance and I walked through it with him. It’s not possible to buy that coverage, between the legacy insurance plan and huge risk pool, only the largest entities can have the best insurance.
The “simple answer” is pretty easy. Put a 10% payroll tax with a $5M income cap, and build out Medicare with whatever benefits are doable under that cost structure. Let the market compete for extended benefits, which would work like a traditional insurance market.
The doctors and medical industries would be happy. People would gain newfound job mobility and freedom. Most people would save money vs the payments they make today. Rich people would be sad because taxes.