What if SpongeBob SquarePants ended after the first movie?

SpongeBob SquarePants is Nickelodeon's most iconic franchise. But what if it ended after Hillenburg left the show and it declined?

Changes

 * Fairly OddParents would be considered Nickelodeon's flagship franchise, being then followed by Teenage Mutant Ninja Turtles and The Loud House.
 * [despite that, SpongeBob as sort of official mascot]
 * All the bad shows made to imitate SpongeBob don't exist.
 * Nickelodeon would pick up Adventure Time, leading to Cartoon Network to restart his renaissance only after the premieres of Regular Show and The Amazing World of Gumball.
 * After the series finale of iCarly, the channel's live-action schedule would be eventually axed as a way to focus exclusively on animated content.
 * Despite that, Henry Danger and The Thundermans still exist, yet as animated.
 * A few original shows will take places of some of the shows that were terrible or seasons of SpongeBob.
 * [Truth or Square and Atlantis SquarePantis still exist as one-off specials/TV movies for SpongeBob post-series finale]