I have previously suggested that tether is a program that helps establish crypto exchangelandea and also that a logical next step if for government to take over the tether program. Venezuela is already starting to do that, and their model is much like an ICO. At the same time the president of the ECB is suggesting that (central) banks might soon start holding bitcoin in reserves. Here we can see a possible line of evolution as described in Ideal Money and captured in one of the possibilities described here:
A world in which centrally banked money is optimally managed is comparable to a world in which bitcoin is effectively global legal tender, and a world in which all central banks value stabilize versus bitcoin.
The evolution of government sponsored crypto-currencies creates a natural on ramp to bitcoin adoption, whether as a global currency, or a high value settlement system. It also creates the possibility for each nation or central bank to programatically inflation target bitcoin.