Engaging in political speculation is pointless IMHO, and it's also even more inaccurate than economic forecasting, and we all know how bad that gets. Predicting the demise of the ACA has become a regular thing, much like predicting the next recession or a stock market crash. It also brings politics into a thread discussion, which we all know is not a good thing.
To remind everyone, the ACA is not one thing, it’s a number of measures. Two have already been mentioned in this thread, subsidy assistance for health insurance and guaranteed access to coverage. A third element also impacts us which is the essential health benefits. In effect, it makes sure the coverage is comprehensive.
These three aspects of the ACA are very popular and also well integrated into our health care system. Changing them is not easy and is increasingly more difficult as time passes, as more people learn to work with them.