Guess you never went to the Improv.
No, I haven’t been to the Improv specifically, but I’ve seen plenty of improv comedy in my day, including filmed footage from the Improv, and it’s not generally equivalent to scripted comedy in other forms, in terms of public demand. If it were, we’d have a glut of Improv shows on tv alongside the sitcoms, stand-up specials, and sketch comedy shows. Instead, we’ve had “Whose Line Is It Anyway?”, and I don’t even know if that is on the air anymore, because I haven’t been interested enough to bother to check in a decade or more.