They can make it more profitable but only helps a smaller subset of people because is better to sell 1000 $10 needless than 10000 $1 needles (transportation, packaging, liability, etc); plus is a strong incentive to use any procedure that makes the patient believe that he is getting better even if he actually don't; because ultimately is the profit margin that matters. And that is not an exception; is the number one rule for business.
And data also goes against your view; the country I am talking is Denmark, the health system is 100% subsidized by the government itself; it haves a 95% health services satisfaction rate because all those events generated from the need to generate profits are non-existent.