I feel though, there are more successful examples of it working than there are examples a deregulated health care market working (which is what is advocated by many -- "why can't it be just like the cell phone market?" -- search for sibling posts around here to find it).
It isn't but in most countries that have single payer - you also have the option to go private if you can afford it. Single payer is there if you need it so no-one goes bankrupt, but those with the means can get quicker treatment if they want to pay for it.
Meanwhile my friends in SV just whip out their credit cards, pay a small deductible, and get seen immediately.
Single payer isn't all sunshine and roses.