All mainstream comedy is consumed not because the quality is high but the consistency is high. You can turn it on night after night, knowing that every 20-40 seconds there is a minor joke and you can passively consume it. The reason it works so well (for its purpose, not as genuine comedy) is that it is light-hearted, predictable and un-taxing. The same thing happens with music, you put on the Beatles because you want some audio beige, not because you're desperate to rock out like its 1967 again. For anything to become truly a mainstream phenomena it must be interesting enough to have an "identity" and reduce the "I'm just not in the mood for it" factor as close to zero as possible.