He's not out of vogue. He just oversaturated his market. His fans only have so much money and so many walls. Not to mention, there are only so many fans. :P
This is why the gallery owners are pissed. They thought they'd have an exclusive on a region, and then discovered that Kinkade wanted to put a gallery in every mall in America. Even one as close as five miles away that was opened after they'd plunked down their own money based on potential sales for THEIR gallery.
You're right...go talk to any CURVES franchise owner in America