5 franchise reboots or spinoffs of popular shows (and why they didn't work)

Sometimes, it is better to not try and recreate something successful. It will inevitably be judged and compared to the original premise or series, and unless the show has offered a solid set of unique characters and storylines, no matter what the series does on its own, the question will always hang in the background of whether the reboot or spinoff compares to the original.

In cases of some of television's most successful shows, creators and networks have tried to continue the ratings success with spinoffs or reboots that offer the same original character or characters in a different setting, or the recreation of a concept while offering a different tone or new perspective.

While there are plenty of television universes that were able to successfully grow out their worlds beyond the original flagship show, such as how Grey's Anatomy grew into Private Practice and Station 19 or The Vampire Diaries became The Originals and Legacies, or even The Big Bang Theory expanding into Young Sheldon, not every successful show was able to build a successful franchise universe.

Sometimes, as much potential as the spinoff or reboot offers, the choice of tone or inability to create a solid substantial group of characters, storylines, or relationships prevents the new iteration from truly stepping out on its own or gathering audience interest.

So, which very popular shows were not able to find similar success from those that followed in their footsteps?