Yeah, well, so far we have a few thousand apps for the Fire TV vs. how many for the Apple TV?
I doubt that the tvOS app market will be anywhere near as vibrant as the one for iOS. A TV streaming box is a much more limited device than a phone or tablet.
Depends on your definition of limited. It's connected to a screen, has a touch surface, motion controls, voice recognition, controllers via mfi, connected to the internet, really other than lacking a camera, not putting it in your pocket and the ability to make phone calls there's not much difference between it and an iPhone 6.
Sure it won't have any web browsing for now but if years of trying web browsing on various devices connected to a tv has told me anything, it's that I'll be quite happy if it never has a web browser. That's my personal preference of course.