Many are owned by hedge funds:

https://www.nbcnews.com/health/health-care/private-equity-fi...

Becoming a hedge fund is actually a bad idea if you are only after profits because it is unclear that over long-time horizon this is actually a very profitable activity. We only remember the winners.

The majority of hedge funds fail within 3 years, having never reached profitability.

Hedgefunds don't get to perpetrate $Billion Medicare fraud and then get elected to the Governor and Senate. (HCA / Rick Scott).

Being a hedge fund that makes money is significantly more difficult than you think