The top priorities of any private business are to survive and to make a profit. Whilst individuals within a private healthcare company may genuinely care about helping others at the end of the day the agenda for the business will be set by management who's job is to make money and to keep the company running.
In a market where viable alternatives to private care exist a reasonably high standard must be maintained in order to ensure repeat business. However where the only access to health care is from private providers (particularly large monopolies or oligopolies) then they are able to give you less bang for your buck (provided they are united in their shoddy service) and you have little alternative but to take what you can get.
This is particularly obvious where Phone and Internet monopolies which use the fact that they are often your only option in a geographical area to provide you with terrible service which lags behind Estonia.
The US private health care system is on average more than twice as expensive for you the customer than it is in countries where you receive universal health care paid for though taxation.
Particularly outpatient care where private healthcare companies take the opportunity to gouge you for additional fees.
What I can't understand is why Americans continue to pay far more in premiums for health insurance than they would for universal healthcare.
Whilst it tends to be slow and bureaucratic for non emergency procedures no one will refuse you treatment in an emergency or ask for money for emergency aid.
In Scotland prescriptions for existing conditions are also paid for by the taxpayer.
If they weren't then I'm not sure my mother could continue to obtain the drugs required for her to keep her sight.
Is it ingrained in the cultural psyche of America that any form of tax increase is unacceptable?
Here's a recent comparison by Forbes which may comparing the US health care system to 10 other countries showing that not only does private health care cost you more money, but that it's also worse...
http://www.forbes.com/sites/danmunro/2014/06/16/u-s-healthcare-ranked-dead-last-compared-to-10-other-countries/