Those "facts" (facts, themselves, are subjective because they judged so by man) presented are highly selective in order to lead to a specific conclusion.
For example, it doesn't state that you can't purchase health insurance across state borders - also a fact and also contributes to increased prices.
The reason that insurance is "tied" to employment is because only a company can deduct health insurance on their taxes.
Building a new hospital is nearly impossible due to, among many other regulations, being required to get permission from other regional hospitals before building a new hospital. This both increases prices and reduces the number of available beds.
And to yet further demonstrate my point, we can see that even mentioning the political agenda on the site generates discussion on the politics.