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All stations, TV and radio, get huge amounts of money from advertising. So they maximize commercial time to maximize revenue. Hence all stations go to commercial breaks around the same time. It’s a formula. If you look at TV shows from the mid 80’s and early 90’s, you’ll see 2 commercial breaks per half hour. Now you see 3 breaks per half hour and about every 7 minutes during hour-long shows. These same rules apply to radio, however they don’t really have “shows” anymore. Just hour long segments interrupted by ads about every 3 songs.
TIL about jellystat. Thank you!