No SDK = No Killer Apps?

Gizmodo makes a case for how Apple is limiting the iPhone potential by not having a true software development kit for the iPhone. At the Keynote yesterday Steve said that no SDK was needed - developers just need to use the built-in Safari browser to deliver distributed apps. The software lives on the web server, not on the phone. However, what is not clear is the availability of things like the built-in address book and other native applications.

I think Gizmodo has very good point and something Steve & Co. should pay very close attention to. Feels like one of those "we won't license the hardware" decisions from 30 years ago. And we all know how that decision played out.

Update: The Motley Fool weighs in with their opinion.