Thats not correct. It is actually the exact opposite.
The ACA places profit controls on for insurance companies how much they can make as a percent of what they pay out (aka the 80/20 rule).
They must pay out 80% in coverage with profit and operation expenses coming from the other 20%.
Therefore, the best way to increase profit is to ensure the total price of healthcare they cover goes as high as possible. It is better to make 20% of a $1,000 drug than a $10 one.