That's full blown derp. Computers managed to do inter app copy and paste for how many decades before anyone though it would be sensible to send local data over the internet to another app on the same device?

The NSA wins again.

I agree on the apps part, but you're missing the "between tablets" part of this particular situation.

When you have poor APIs to work with you have to start thinking out of the box.

Quite literally outside the box, in fact.

But then the box never gets fixed.

That's a bit like saying that someone creating a web browser means it will never be as part of the OS.