If you're unwilling to pay more than $6 for a book, how can you support niche works that may take great time and difficulty to produce?
I agree however that when it's far easier and faster to get a product from a torrent website than it is to buy due to the number of hoops that you have to go through then the distributor has a problem.
An example of this is netflix who use silverlight DRM on all of their streams so I cannot play them on my Linux HTPC. This is of course despite the fact that people ripping their streams is not the problem, I'm sure all of their content is available at better quality on torrent websites. All this does is put barriers up to potential customers.
In many ways it seems like going into a shop and finding some goods that you want to buy but that the checkout line is an hour long and they only cash in certain denominations and you need 2 forms of ID to make a purchase. So many people just end up shop lifting out of exasperation.