That is government health care for you -- limiting choices, forcing you to buy what they think is best for you. Private companies do this as well -- this year I had no choice anymore in health care.
If we banned all job-related health care, and the companies paid us the extra and then we could get tax-deductable insurance on our own, you could have chosen any plan you wanted, there would be competition for health insurance like there is with other insurance.
If we banned all job-related health care, then I suspect a lot of people would just use the money to get a larger car or TV and we would be stuck having an add-on to our bills to cover the emergency room usage. The same problem we have now only much larger.