The Dems took a wrecking ball, backhoe, and road grader to the US Healthcare Insurance industry by passing the ACA. We can't go back to the old "system" - really "systems". The Dems never were interested in entertaining discussion on Republican proposals, even though the Republicans recognized there were significant problems with the former status quo.
Subsidies aren't the answer, or at least the entire answer. That's just taking from some people and spreading the wealth around as B. O. would say. It's short sighted.
The Republicans say they have plans that will address pre-existing conditions, and allow for affordable HC Insurance coverage. They're up at bat. Should be an interesting inning.
And if Trump wants to strong arm American Pharma to lower their prices, perhaps he would do better to apply some pressure of the Canadians, Europeans, Japanese, etc. to pay their fair share of the drug development costs that are borne nearly 100% by the American consumer. THAT's the fundamental reason prescription drugs are so high in the US vis-á-vis their costs in the formularies of foreign countries.