If the Supreme Court does overturn healthcare reform, Democrats and liberals might as well close the book on efforts to ever get universal healthcare. The reason is that Republicans have drawn themselves a near lock on control of the House and Democrats are not likely to get 60 Senate seats again anytime soon. Think a Republican Congress is ever going to pass universal healthcare? Forget about it. This is do or die for Democrats.
The PPACA isn't universal healthcare anyway, so I don't see how this is relevant.