What if The Simpsons ended after the first movie?

We all know The Simpsons is the most popular and currently the longest-running animated series of all time, inspiring more adult cartoons to be made. But what happens if the series would end after it's movie? And what would Fox do as a whole?

Changes

 * Family Guy would've been cancelled after the time travel episode, meaning it serves as a series finale.
 * Despite having the show end, Fox would continue to make The Simpsons as their primary mascot until 2019.