Can we really say it was cancelled when it successfully reached the 65-episode minimum requirement that FOX originally ordered? Sure, the final episode ended on a cliffhanger, but that was a gamble to give the show an extension beyond its original 65-episode count. While it didn't receive an extension, 5 seasons of 65 episodes was the original goal, and that was met.
I think it's all part of the same story of conflicting visions and priorities. The show's writers wanted to continue their story, which is why the last episode ends on a cliffhanger.
But the powers that be said "nope you hit the limit for syndication and that's that."
The whole syndication argument was another reason why so many execs didn't want kids shows to be serial. They wanted stand alone stories they could play in any order on syndication.
So Spider-Man getting shafted was right along with that- the show's writers having a vision that the suits just had no time for.
STAS I'll give you since it did get canceled (just 11 episodes short of reaching the 65-episode minimum), but BTAS was also originally ordered for 65 episodes, and it did get an extension of 20 more episodes, and a continuation in the 24-episode direct sequel series TNBA. BTAS well surpassed its original expectations too much for it to have been considered canceled (unless you meant TNBA specifically).
More so I consider it cancelled because the show's creators didn't have agency in how it ended. BTAS may have met and exceeded the 65 episode mark, but the decision to cancel the show wasn't down to low ratings, slumping toy sales, or even the creators going "ok we've told our story."
It was a bunch of suits who applied their broken logic re: kids programming to end a show that still delivered strong viewership while also raking in critical acclaim and industry awards.
"Kids shows can't tell serial stories," "Kids shows need kids as main characters," and "you get sixty-five episodes to get onto syndication" were all kind of inseparable from each other, each part of a larger world view that held sway for decades, through the 90s.
It took S-MTAS, STAS, BTAS, Beast Wars, Gargoyles, Reboot, and more to break the dominance of that kind of thinking, and each of those shows has behind the scenes horror stories of fighting execs with outdated and nonsensical thinking every step of the way.
BTAS and STAS probably has the best developmental cycle in that WB animation seemed generally behind them, but even then you have pretty notable examples of WB execs throwing wrenches in the works.
The amount of damage done by entertainment executives operating entirely on coke-fueled guesswork is incalculable.
So when it became apparent that Jason David Frank was going to be leaving Power Rangers Hiam Saban told Johnny Yong Bosch to grow his hair out. Why? He thought that Tommy was popular because he had long hair.
How do these people build and maintain children's entertainment empires without actually knowing anything about children's entertainment?