I'm not aware of a single advanced-economy state (I usually shorthand this "OECD" but Singapore's not a member, AFAIK) that doesn't use price controls, explicitly or de facto (monopsony), in their health care system.
Price controls, non-profit status requirement for insurers, and a non-ruinously-expensive "public option" seem to be common factors in the most "free market" (relatively speaking) systems of our peer states. Despite Obamacare we've achieved zero of those, nor have we opted to go further "left" to mimic any other proven-to-control-costs-and-deliver-care system.
Price controls, non-profit status requirement for insurers, and a non-ruinously-expensive "public option" seem to be common factors in the most "free market" (relatively speaking) systems of our peer states. Despite Obamacare we've achieved zero of those, nor have we opted to go further "left" to mimic any other proven-to-control-costs-and-deliver-care system.