What market failures was the ACA intended to address and how did the ACA address them?

Obama Care case briefing
Read attached case and answer the following question in your own words. (400 words) 1)What market failures was the ACA intended to address and how did the ACA address them? 2) Considering everything you know about the ACA, do its benefits outweigh its costs? Why or why not? Note: please do not quote case unless absolutely necessary.