Movies for the most part have a conclusion.
A TV series just continues manufacturing convoluted plots for as long as the ratings remain high. Eventually it just gets old.
Having said that there have been TV series that transitioned into hit movies albeit usually with a different cast:
(Mission Impossible, Star Trek, The Equalizer, The Untouchables, Batman, and The Fugitive to name a few.)
Sometimes too many sequels can have the same effect as watching a TV series. Note: James Bond: (26 movies) with 12 different actors in 53 years!