It was to reinforce my point about the later books being (probably more) financially driven not artistically driven.I am confused. Asimov's royalties for I, Robot and the Foundation novels were a joke. He acknowledged this.
I do not understand where you're going here.
He sold the stories for the, back in the day, going rate, different world then...never the less that quote is basically what he said at the time...mind you, he said a lot of things.