The CRTC established Canadian content quotas for radio in 1971, recognizing the link between radio airplay and record sales. Radio as a promotional vehicle has been waning since the 1980s. MP3 players, social media sites, online radio, and streaming audio services have gained prominence. Websites permitting bands to upload and promote their music provide a much more diverse spectrum than conventional radio. There is little money in streaming for those who produce the music (e.g. musicians and recording companies).
