There is a big difference between single-payer and a nationalized healthcare system. In the latter, doctors are government employees. The UK and Canada work that way, and choose to spend very little money on healthcare. But most peer nations have single-payer non-nationalized healthcare systems and choose to spend more than Canada and the UK, but much much less than the US.
With a single payer, the commercial service objective is warped: patients and doctors are motivated to make care decisions that are inefficient or even harmful, and customer service or premium care for people who want it is eliminated.
See, this is not true at all. Consider the French system. Basic care is provided by a government plan, but doctors don't work for the state and everyone can supplement with private coverage if they want to pay extra.
With a single payer, the commercial service objective is warped: patients and doctors are motivated to make care decisions that are inefficient or even harmful, and customer service or premium care for people who want it is eliminated.
See, this is not true at all. Consider the French system. Basic care is provided by a government plan, but doctors don't work for the state and everyone can supplement with private coverage if they want to pay extra.