In all of these areas, I can see the potential for multitouch-based applications that go far, far beyond what we're currently seeing, or have ever seen on a traditional mouse/keyboard computer. In fact, in my current line of work as a developer, I'm pursuing these very things.
If you're in a line of work where you're attempting to push the boundaries of what's possible with a computer, I find it hard to believe that you aren't fully aware of the realized and unrealized potential of multitouch devices.
Just because the iPad feels like a toy right now, doesn't mean it's limited to that sort of usage for all people, from now on. I just don't see Amazon playing any role in pushing user-facing technology forward. Silk is brilliant, but the Fire doesn't really enable anything that wasn't previously possible, and I don't see that changing. The iPad did.