Perhaps because the "fix" in the GOP opinion is in the opposite direction (ie cut taxes on the wealthy, allow sub-par policies, allow prohibitive rates for pre-existing conditions) than where Dems want to go (basically single payer).

But all that shouldn't matter.  GOP controls House, Senate and White House.  If the Dems controlled one of these than we'd have a discussion, but the GOP is driving the bus, and can't seem to get anywhere.