92% of the population listen to radio in a given week according to the latest arbitron statistics.
TV will be the end of radio: it wasn't.
Cable radio will be the end of radio: it wasn't
The Eight Track player in cars will be the end of radio: it wasn't
The Sony Walkman will be the end of radio: it wasn't
1996 deregulation will be the end of radio: it wasn't. (In fact the biggest revenue years followed dereg)
Satellite radio will be the end of radio: it wasn't and won't be. (XM and Sirius had to merge and have less than a 5% share)
The I-Pod will be the end of radio: it wasn't (though it killed the last Sony Walkman in 2011)
Internet radio will be the end of radio: not likely, though it may provide new audiences for radio outside their home markets.
Radio is not about a delivery system, it is about content. Content can be music, talent, talk, contests and so much more. Content is constantly changing and adapting, but it happens so slow in radio it is hard to notice. The last two decades has seen a rise in all kinds of talk radio. On the music radio front instead of four or five top 40 stations in a market their is CHR, Rhythmic CHR, Adult Top-40 and different blends of music. Instead of four or five MOR stations there is AC, HOT/AC, Urban AC, Smooth Jazz and Oldies AC. Even formats like JACK, BREW, Classic Hits, AAA and Alternative were evolutions since the 80's. Oh yeah, the Seattle radio market will bill just under 200 million this year. 20 years ago it was half that. Seattle has a whole crop of new talent on KMPS, KZOK, KNDD KLCK, KQMV. Change continues and radio survives. Happy New Year!