ACA is not the problem. It's an attempt to change our broken health care system. Increase preventive care, increase revenues and make everyone pay for services they will eventually need. I don't understand your comments on "everything free". ACA is exactly an attempt to end that by having everyone pay for health care which they other wise would not pay i.e. going to the ER as you described. Everyone pays for auto insurance, what's the big fuss about paying for health care insurance. Someone has to pay.
The problem is that it modify the high profit model hospitals now have. They have to change to a more socialized model, which serves the interest of the patients rather then their amazing profits and that is not seating well with these CEO's.