You can add another class of people to that list.
Those who have suffered a disabling work related injury. You are a liability to the Insurance Industry as they actually have to use a portion of the fat premiums they collect to provide care that has been bought and paid for by employers through the high premiums they pay for WC Insurance.
You might be a liability to the Social Security system if you actually qualify for the disability benefits that you have been paying into with every paycheck.
You are only a benefit to the health care industry, including big pharma, as long as they can keep you in the system for drugs and other health care services, billed to a third party at a fat markup.