Respectfully EIDOLON, the ACA did nothing to control costs which have gone up by 20% or greater every year it's been in force. Secondly, it took away the cheaper policies people had, like paying for in-house drug addiction treatment, mental health commitment and treatment, etc. to name but a few, which the now cheaper plans won't be soaking people for who aren't addicts or have mental issues, just to name a few of the coverages they'll remove, just like when Mr. Obama lied about such policies saying folks could keep them. Also these same policies had catastrophic needs in them, but with high deductibles just like the ACA high deductibles 
What it didn't have was government subsidies, of which 80% on the ACA require at taxpayer expense! Without those subsidies which are scheduled to cease in time under the ACA, it will implode. Thus the ACA is medical welfare at taxpayers expense, which also hits the middle class with higher premiums offsetting the ACA losses as the insurers raise rates