It seems quite obvious that they want to lock it down to try extract all the revenue they can. In the world of consumer electronics PCs are sadly an anomoly. For example every gaming console ever sold (AKAIK) extracted their vig from 3rd party developers.
Plus it allows them to tap into other service revenue like the Ring Tone and also make sure VOIP on the iPhone doesn't get rolling. Also I suspect it would be much more difficult for them to keep the iPhone SIM locked if they opened up with an SDK.
It seems quite obvious that
It seems quite obvious that they want to lock it down to try extract all the revenue they can. In the world of consumer electronics PCs are sadly an anomoly. For example every gaming console ever sold (AKAIK) extracted their vig from 3rd party developers.
Plus it allows them to tap into other service revenue like the Ring Tone and also make sure VOIP on the iPhone doesn't get rolling. Also I suspect it would be much more difficult for them to keep the iPhone SIM locked if they opened up with an SDK.