For the same reason you don't like WalMart putting such a low ceiling on prices that quality necessarily suffers. It depends whether you want a book, now, for

For the same reason you don't like WalMart putting such a low ceiling on prices that quality necessarily suffers. It depends whether you want a book, now, for $5 less, or better books for the years and decades to come. Publishing is already in the thrall of fashion; forcing them into prices that are only sustainable at huge scale means more Dan Brown and less literature.