Steven Hirsch, the porn trailblazer who founded Vivid Entertainment, isn't nearly as bothered by Apple's legendary prudishness as I am. And he makes a good (practical, if not particularly principled) point.
According to BNET,
Apple has caught a lot of flak for its "ban" on pornography, but Hirsch says it doesn't matter: "If someone has a browser, they can access our media." Being web focused not only lets Vivid steer clear of would-be censors, it frees the company from having to rerelease its content on different app stores, like the Mac App Store and the Apple App Store and the Google Market and so on. So it doesn't need to make big shifts every time a new phone, tablet, or another web-enabled device hits the market.