If your making music with money as ur main aim then you should'nt be making music in my honest opinion!
I don't necessarily disagree with you, but to go devil's advocate on this angle, how does it make it any less creative a process what your motive is for doing it?

e.g...I've seen it said on these boards that some prefer producing techno, and prefer listening to hard trance. If these people produce a hard trance track, is it less genuine than if they'd produced a techno one?

Some quotes from money-oriented producers:

Stock Aitken and Waterman: "What we do is not art."
Daft Punk: (paraphased) "I hate disco and house and all that stuff, but it's the only thing I'm good at."