There's two proven paths to do this on different ends of the spectrum.
The first is single payer which has proven implementation and is able to lower costs by directly controlling prices.
The second is what Switzerland does which is where much of the inspiration for the ACA came from, except every single person would be required to buy from the exchanges rather than using some employer program. The ACA failed to properly acknowledge the negotiation power of certain large employers who often have large numbers of healthy young employees and have a deep understanding of their own risk pool, leaving the ~3% of people who use the exchanges paying more simply because they are a higher health risk population. Additionally, the ban/tax on "cadillac" plans absolutely needs to go into effect as it's an important mechanism for controlling costs in a market health insurance solution, as in demand doctors could just require patients have said cadillac plans that pay out more.
There are handfuls of solutions in the middle of this, but they generally involve the government controlling prices to a certain degree, but only single payer would be effective at both bringing costs down and insuring more people, as you absolutely have to create short term shortages in order to solve both problems at once.
The first is single payer which has proven implementation and is able to lower costs by directly controlling prices.
The second is what Switzerland does which is where much of the inspiration for the ACA came from, except every single person would be required to buy from the exchanges rather than using some employer program. The ACA failed to properly acknowledge the negotiation power of certain large employers who often have large numbers of healthy young employees and have a deep understanding of their own risk pool, leaving the ~3% of people who use the exchanges paying more simply because they are a higher health risk population. Additionally, the ban/tax on "cadillac" plans absolutely needs to go into effect as it's an important mechanism for controlling costs in a market health insurance solution, as in demand doctors could just require patients have said cadillac plans that pay out more.
There are handfuls of solutions in the middle of this, but they generally involve the government controlling prices to a certain degree, but only single payer would be effective at both bringing costs down and insuring more people, as you absolutely have to create short term shortages in order to solve both problems at once.