How long before Anywhere.fm + Wimax kills terrestrial radio?

We've all been subject to the abuse of radio as we know it. My drives on my daily commute to college were brutal; repetition and uniformity in all the station playlists. When, not if, wimax reaches wide penetration, it will likely disrupt radio as well as cell phone carriers (Skype + Wireless IP == end of cell phone bill).

When?