In an industrial society which confuses work and productivity, the necessity of producing has always been an enemy of the desire to create.
-- Raoul Vaneigem
A good observation.
For example, one of the most important criteria for the galleries to take on and support a new artist is whether he is continually producing (and in the same quality and style). But one thing I have noticed is that when somebody in a creative field gets into a situation where he has to produce more regularly than he would by himself, the quality always suffer. Sometimes dramatically.
It's a difficult conflict, because on the other hand the business side of things is indeed often hurt by long breaks between output.