The way to make care available is to drive down costs. We haven't done a single thing with the ACA to improve the affordability of care, we've just made the un-affordability a problem borne by the people who were already doing a good job of taking care of themselves. That's not a scalable solution.
The ACA got us a lot of short-term benefit for a small group of people but set in motion a chain of events that will only drive UP costs while driving affordability down.
And I'd like to argue that until we do something to improve the market dynamics of healthcare we are very likely to see this sort of thing continue to get worse until it's so unsustainable that it's like trying to legislate away the force of gravity.
One thing I'd like to see in any future version of ACA reform is RIGOROUS price transparency by healthcare providers. It should be absolutely illegal for any healthcare provider to conceal, obfuscate, or otherwise obstruct the price discovery mechanism of the market.
Even if you argue that consumers aren't the best people to decide what services are necessary or needed, they can rely on the advice of trusted advisors and popular understanding to shop for healthcare at providers known for offering good value.
SO MUCH of health care isn't of the "emergent" kind but the kind that is for chronic issues that are the result of unhealthy living or plain bad genetic luck. We need to redouble our efforts to drive those costs of care down and start paying for results and not treatment. Paying for treatment encourages overconsumption. Paying for outcomes encourages optimizing for cures.