"Baumol's cost disease" is the answer to a different question
Changing Higher Education
JULY 29, 2015
In 1966, William Baumol and William Bowen looked at the origins of rising salaries for live performances (music, theater, dance), and noted that an underlying issue was that such performances could not easily be made more efficient - productivity could not be increased ( Baumol and Bowen , Wikopedia ). The oft-quoted ( and quite convincing) formulation of this concept is that a Beethoven quartet must be performed by exactly the same number of musicians today as was required in the 19th century,
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