Shortwave broadcasting will never go digital. DRM is on life support. Tropical band broadcasters in Latin America, Africa and Asia have audiences that cannot afford much in the way of electronics. And where you have conflicts, shortwave is the only medium that cannot be stopped by man. Even during the height of the Cold War decades ago, Russian and Chinese jammers couldn't do anything to stop VOA and BBC broadcasts.If everything went digital, then THAT would kill shortwave.
The shortwaves will evolve, but never die.
just an example of how many English broadcasts there still are..we just cannot pick up on all of them. This is just in the 0400utc hourSW probably won't die, but it in terms of listenership going to be like that proverbial "tree falling in the woods." With most of the major old school broadcaster moving to the web, it's getting harder and harder to find any English language broadcasts other than the ubiquitous Radio China, Radio Moscow, and ten zillion raving religious stations. There's only a limited amount of interest in scanning past foreign-language stations and listening to commercial aircraft gets pretty dull after awhile. I predict that within 25 years SW will be totally gone, as probably broadcast AM and FM will be, as everything moves totally to Internet or satellite based transmission.