I'm not blaming Spongebob for the various flubs by Nick's executives.Because those that really know are aware that Hillenburg, along with quite a few crew members, worked on Rocko's Modern Life before that got cancelled. Having watched that show when it was new, I doubt that it would have made it to mid 2000s, and it honestly shouldn't have.
>getting one or two more seasons but not becoming that long running
Well, my previous statements about Hey Arnold and Rugrats can be taken with a Plebbit /s. Though, it's possible that The Wild Thornberrys, Rocket Power, Invader Zim, and Jimmy Neutron would have gotten more seasons if Spongebob didn't exist. CatDog really didn't need a post-movie season. As the movie could be taken as the finale. But, due to the way the movie ended, there was no harm in a final season to see how events had changed the characters. Harvey Beaks I've never seen. EL Tigre... It's still surprising how they didn't push that one more. Another two are Angry Beavers and Cat Scratch.