The scenario that is illustrated here about the movie can be referred to as the the law of diminishing marginal utility
This law states that as a persons consumption increases, the maximum utility they get from an additional unit of the good would fall.
This can be illustrated as, watching the movie does not seem to please the character anymore because no additional utility would be gained.
Read more on diminishing marginal utility here:
https://brainly.com/question/15242967
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