It's been imploding since its start.  Insurers pulling out and premiums /deductibles rising all while subsidizing is being lowered to uncover the TRUE cost.  Remember when O'bama wanted to hold off a previous "scheduled" increase until after the election?  Remember when the feds were to ONLY subsidize those states who set up their own exchanges but INSTEAD subsidized ALL states JUST to make the "A" in "Affordable" MEAN affordable?  Trump just accelerated what was to happen in the end WITHOUT incurring the debt of waiting until the end.