If it's an DRM free ebook I'd understand your argument. But almost all ebooks you can buy have DRM and therefore you don't really own it, you can't lend it to f

If it's an DRM free ebook I'd understand your argument. But almost all ebooks you can buy have DRM and therefore you don't really own it, you can't lend it to friends etc. It's not just about the marginal cost and the distribution cost.