Book festival economics

       Via I'm pointed to Carl Wilkinson's piece in the Financial Times considering The economics of book festivals.
       A definite growth industry -- though one wonders who is benefitting from the growth.
       Author-exposure (of this sort) has definitely increased many times over in recent decades -- has that really translated into similarly increased book dissemination ?
       (As always, I'd prefer the focus to be on the texts, rather than the personalities/performers .....)