Yes, the gop's greatest fear is obamacare will work, and single payor will work ... although it goes against the grain of the philosophy of individual choice and responsibility the nation was founded upon. As Jake points out, we in the gop had nearly a decade to address this, but W was too busy dallying with tax cuts nobody outside the 1% cared about, education and then morphing a terror attack into nation buidling in a nation where the tribes hated each other.
At this pt, hillary might be our best bet. The solution is pretty elementary. Tax providers and insurors to fund the high risk people, but in exchange, they are "nationalized." Soft mandate young folks into catastrophic plans. Hold down cost with forcing providers to take medicare reimbursement rates. End private employer tax breaks for healthcare, and tax those who don't provide care, and give people tax credits to buy insurance on exchanges .... with subsidies high enough that nobody making less than 75K feels a great difference. But the gop cannot pass anything that involves taxing people to pay for other people to have healthcare ... even if it means not raising more revenue via income taxes.