I'm not sure that Steve Jobs has ever indicated that he's against DRM as a concept, only that he thought it was pointless and self-defeating to continue selling <em>music<em> with bundled DRM. Especially with BitTorrent and p2p networks being so prevalent. His opposition to DRM on music was expressed in practical, not moral, terms.

But DRM on movies still appears to be relatively effective, even though that might soon reach the same point music did and I don't think there's much doubt that DRM on apps has prevented a fair bit of piracy. If I think back to how easy it was to get pirated apps for an S60 phone a few years ago and how not one of the people I know who have jailbroken their iPhones has paid for any of the apps they own I can definitely understand why Apple would prefer a closed system with DRM.