The Soo in the USA used to have a great fm rock station in the 70s as if i remember it was the first station between both Saults that played entire album sides commercial free.Today i find fm stations have become more like the am stations were back in the day with all the commercials.
WSMM. The first station my brother and I found when we moved there in 1975. Never had a clue that 6 years later I would be on the air there. By 1982 they changed formats and it sucked hole from there forward.
Today's radio is corporate - single companies owning several stations. I know for a fact how they're run now because the guy I got started (who always wanted to be in engineering before) in radio now owns that station and about 11 others in no4thern MI. (I ended up quitting radio and getting into engineering . . go figure.)
The corporation sets the format for the sound they want on each genre of radio they want to portray. Most morning shows are still "live" but everything else is pre-recorded digitally. I've been told that a good "jock" can record a 4 hour show in about 45 minutes. Thusly, they "host" 3 or more shows on different stations at different times of the day and they're done recording them before noon.
My long time bud took me on a tour through his studios one afternoon about 15 years ago. All four studios in that building were empty - completely running on auto-pilot.
I remember being a bit flippant with him when he told me that listener frequency is up, it's the duration of listening that's down. I said "That's because your programming is "tish"! I can get your version of 'classic rock' anywhere on the dial - it all sounds the same. So once I hear the weather or the sport score I'm looking for, I'm bored with everything else and flip down the dial!"