franchise /frăn′chīz″/ noun, plural franchises

(removed other meanings)

• a series of related works (such as novels or films) each of which includes the same characters or different characters that are understood to exist and interact in the same fictional universe with characters from the other works

I’m not seeing how ‘a franchise ending’ is oxymoronic.

Saying person x should be shot, no jury would convict you is not ok.

Vladimir Putin should be shot, no jury will convict you.