> Yes, space is an issue if you think of it in terms of the customer's attention span.

I don't hear independent developers griping that Apple is failing to advertise their apps and bring those apps to the attention of iPhone users. Instead, I hear independent developers griping that Apple is preventing their apps from being run on iPhones.

Therefore, I completely disagree. This is purely a matter of data storage space (cheap and nigh infinite), not a matter of limited attention.