Selling records is their job, it's how they earn a living. And it can be pretty hard to keep your artistic soul intact when that A&R guy is waving a million dollar advance under your nose. Most of the folks who get to keep their creativity are the ones that developed a following on the bar circuit before getting a major label contract, people eeking out a subsistence living in music are the only ones who still have any power over their album, them and really well established "dinosaurs" like Alice Cooper or Jethro Tull. The day David Geffen sued Neil Young for making "unmarketable" albums (Neil eventually won, but artisticly he's never recovered from the Geffen years) the accounting department took over the major labels, make an album your company doesn't think will make money album doesn't get published and it doesn't count to your deal either. And the companies all want their artists to make their highest selling album over and over.
I don't believe there is an A&R guy out there who could get a record label to fork out that much in advances.