According to contactmusic.com, Paul McCartney doesn't mind making money:
The former BEATLE is famed for his business brain and insists if his record isn't commercially successful, he will have failed because it means people don't want to listen to his music. And he hates the way money-making music is frowned up, because to him it serves as a symbol of achievement.
He says, "I don't know anyone who makes records who doesn't want them to sell. Sell has become a bit of a dirty word. OK - forget the money, you want people to have them. Or else you wouldn't do music, you'd just be a busker.
Or a blogger, I'm sorry to say.