Jonathan Bernstein explains:
It ain’t gonna happen. There won’t be any serious GOP alternative to Obamacare.
The first problem with developing an alternative to the Affordable Care Act is that there just may not be any policy alternative that comes close to accomplishing what the law accomplishes. At first, it looked like conservatives would leave themselves a way to propose their own version of the same reforms in Obamacare, and rename it on their own terms. As such, there seemed to be a method to it when, at the outset, conservatives worked hard to prevent an actual discussion of the substance of the law itself. Much of the initial hatred of the ACA was focused on a series of phony talking points and outright lies (“government takeover” of health care; “death panels”; the law was “rammed through” using corrupt procedural tricks; etc.)
…conservatives have decided that no policy overlap with Obamacare is acceptable. Tea Partiers have chosen to oppose not only Obamacare but any policy which even faintly resembles any piece of that omnibus legislation.