Please don't lump everyone wanting to JB into the same (laughable, to me) SBSettings or the even more presumptuous pirating use cases. For example, I'm in Canada, and my favourite music service is Grooveshark (Spotify is not available). The only way to get the Grooveshark iOS app is through jailbreaking.
Sure, too many people but definitely not everybody, and I just talk for what I see, that is, the population here in Italy that I can monitor directly (however in Italy there is a strong inclination for software piracy).
