You're saying that Amazon will be the big winner in the long run because they can control the phone, and the products you buy on Amazon?
If I'm interpreting that correctly, I don't see how that holds. People use smartphones/tablets/televisions to consume many things. Amazon products are just one of them.
I don't think that just because controlling the entire product ecosystem would work to Amazon's advantage means that customers will want a phone that enables that end-to-end control.
The end-to-end control works well for the Kindle, because eReaders are used really only for reading the books that are available only on Amazon's eReader marketplace. But I can shop Amazon from any device I want. So having a phone that owns that experience isn't a major value proposition for me. I'm much more interested in things like display, battery life, camera quality, sound quality, and the phone's popularity than which product ecosystem it taps into.
To me Amazon is working from a major disadvantage here. The technology doesn't seem mind-blowing, the device at first blush doesn't look remarkably different from what's already available, and since phones are largely subsidized by carriers, most customers aren't going to be hugely price-sensitive. If anything, people opt for the most expensive, newest phones. If Amazon is looking for the people who will spend the most money, they certainly won't be interested in customers who think $199 is too much to spend for a new phone that they will use every day for at least two years (which is a moot point since the phone is priced at $199).