Any libertarian or conservative worth his or her salt would cringe at the concept that someone should determine how much money is "too much", but let's leave that for another day. Is it true that health insurance companies are making, however we define it, too much money? This professor of economics and finance ranked plenty of fields; you can decide for yourself.
Do you want a government-run health care system?
Update: if you don't want to trust him, maybe you'll trust Yahoo Finance data.