Giant corporations don't? Health insurance companies have entire deparents dedicated to denying claims. The #1 reason for bankruptcies in this country is due to medical bills, most of which stem from denied claims, gaps in coverage, or no coverage.
So you're willing to put your trust in a for profit, mega corporation, but you don't trust the government to handle the delivery of health care because they lie?
Do you feel that Medicare is wrought with lies and broken promises? Do you know any seniors that turn away their Medicare coverage and instead purchase coverage through an insurance company?
Medicare is the most relevant example of how our govt would handle a single payer system, so I'm curious to hear your thoughts on how it's run....