You are absolutely correct! 
Obamacare is designed to weaken and even destroy the private insurance companies. Forcing those companies to cover all of the government requirements, and pre-existing while keeping their premiums low and affordable is an impossibility. It was designed to collapse with single payer being the only other option available. There is a video stating that exact sediment by Barney Franks. 
 https://www.youtube.com/watch?v=QLm9t9j-qKM