I don’t see them putting in Single Payer.
They don’t need to. ObamaCare is Corporatist/Crony Capitalism economics. The government is totally in control (command economics) and gets to call the shots. The means of implementation is in private hands, but under government direction. The public is mandated to pay for it.
So, again, no need for single payer. Especially since the corporations can funnel some of their profits into political activities (read: Democrat coffers) ensuring that the system isn’t changed.
But knowing the Feds, and politicians..they eventually will think they can do it better..and take over.