The government, in a manner similar to the BBC, operates a number of national radio services. There are some national private stations. All of these will go to DAB.
Here's a question: Do you think the voters in this country or members of Congress would support spending hundreds of millions of dollars on a government-owned national radio service all staffed with government employees that would be all digital, requiring the public to replace their current radios? What are the chances of it happening?