yes.amazon is losing money on each sale. great business model. in the hopes of having the user buy digital content.
on the other hand
apple has most of the digital sales market share and they profit big on the devices and computers they sell.
I really do not see what point you are making. I tried the kindle fire, but I hated it. I personally use an acer iconia tablet and I love that. I also have an ipad as well which I love.
I would also add that the kindles and nooks are budget devices.