Don't get too excited about Republican calls for defunding Obamacare. It's not about killing therole for government in healthcare and replacing it with free market healthcare, it's about a Obamacare being replaced with Republicare. It's going to be announced next year.
Neocon Bill Krsitol spilled the beans, yesterday, about the plan on CNN:
(If you are in a hurry, go to the 1:50 mark)