Candy said, " They all found out why this is an impossible dream."
That is just it. It isn't. We know it isn't because of every other first world country in the world does it and they do it at a lower (sometimes much lower) cost than our cobbled together system does.
The only reason we can't achieve it is corruption. If every time you look at the problem you start off with the premise that insurance companies, pharmaceutical companies, hospital holding companies and pharmacy benefits managers not only have to be guaranteed their current slice of revenue but still be allowed to grow their profits 10% year after year you will never have a functioning system.
Insurance companies don't even need to be part of the equation anymore as their products are in complete market failure. They are only sustainable through ever-increasing government subsidies. Actuarially speaking the numbers just don't work anymore. Only about 20% of the population can afford to buy a market-based policy.