I do, though, because I am kind of lazy. I don't want to scan or type up books (although I've been seriously tempted for a couple out-of-print books I keep trying to get people to read). I don't want to have to spend half an hour fixing formatting when I buy an ebook, just so it's readable. Self-publishing has its pros, but there is a basic bar of "typically grammatical and spell-checked" that non-OCRed publishing house (e)books usually meet right off the bat. As much as I'm frustrated with major aspects of traditional publishing, I'm not keen on throwing the baby out with the bathwater.

(And I suppose they can always work harder on controlling devices, if they can't control data, which is even more potentially scary.