What if Nickelodeon started out as a studio before launching its own TV channel?

You may know that Nicktoons started in 1991 in our real world, but for this AU version, imagine if what would've be like if a channel Nickelodeon would've started by making their canon of animated television series only for its channels since 1980?

List of changes

 * Nickelodeon Animation Studios would've be founded in 1980 under its original name Nickelodeon Cartoon Productions (1980-1989), Games Animation (1990-1996)
 * The previous Nicktoons would've later be mostly known for its crude humor since 1991.
 * TBD