That is very bad reasoning. Most things don't get cheaper when they get nationalized. There is some evidence healthcare may be different in this regard, but the point is: costs are not invariant under nationalization.
> Is your position that bringing everyone's healthcare up to Medicare's baseline is too expensive? Where is the extra cost coming from?
Cost of providing the existing service is not the only cost worth considering. The other issue is opportunity cost of innovation. Right now there are powerful incentives for people to innovate in the healthcare space, particularly in pharmaceuticals. But also in prosthetics and the procedural space. Nationalization is likely to crimp those incentives, and thereby lead to less innovation over time.
We already pay for our healthcare in the US, we just do it predominantly via employer-contributed job benefits, and existing Medicare/Medicaid. The money for the bulk of healthcare is already there, but there are people falling through cracks all the time.
Is your position that bringing everyone's healthcare up to Medicare's baseline is too expensive? Where is the extra cost coming from?