One could argue The Smothers Brothers original 1967-1969 show, was an example of a network (CBS) getting tired of a show and the demands of the performers and just axing it as more trouble than was its worth.
I just saw this last night called Smothered about the Brothers battle, and especially Tommy against censorship and the standards and practices of CBS.
https://m.youtube.com/watch?v=xnnmcP6FkWk
I personally think that Tommy Smothers was a jerk who got a big head, and really ruined a hip, cool show with way too much left wing politics. He also very publically complained in the press and on his own show about how unfair CBS is treating them. If Tommy just would have chilled out a bit, his show probably would have stayed on a few more years.