Who's buying fiction

The PIC (Publishing Industrial Complex) has become so consolidated (like radio), that they need to churn out blockbusters to make the profits they want. So obviously, the people who are buying those blockbusters are the general public, but it seems like the folks who buy the other kinds of fiction are writers or wannabe writers. I didn't really think too much about this until I saw all the books that are being featured at Karin Gillespie's blog. Not that there's anything wrong with that. But I sort of "wish" the PIC wasn't so big. That way, they wouldn't be so impatient to only accept authors that are going to hit it out of the park the first time they're at bat.