Conversation so far:
When did The Donny & Marie Show start?
The Donny & Marie Show began in 1976.
Was The Donny & Marie Show popular?
The Donny & Marie Show was a hit on ABC. But the success came at a cost.
What was the cost of the success of The Donny & Marie Show?
The family built a first-class television studio in Orem, Utah, where the show was produced. As a result, the Osmonds as a performing band became a lower priority.
What was The Donny & Marie Show about?
The Donny & Marie Show is an American variety show.
Are there any other interesting aspects about The Donny & Marie Show?
The show was cancelled in 1979.

Question: Why was it cancelled?
Self-contained rewrite: Why was The Donny & Marie Show cancelled?