There is no difference to me, there isn't much difference to Apple but there is to dropbox - their business is dependent on users paying for cloud storage.
The problem with that, as I see it, is that in the longer run cloud storage becomes a commodity. Hence Jobs' description of it as a feature, instead of a product.
Access is also a commodity. That doesn't stop ISPs the world over from making a killing on it.
Yes, it is a feature if you've already got an OS and a bunch of devices out there.
But it is a product if you can do this seamlessly across all os's, and all devices.
Both perspectives are equally valid in this case. In the end to the DropBox guys their product vision was worth more to them than Jobs' feature vision allowed him to pay for it.
Time will tell if that was the right decision, for either party.
