i think they slowly are. i mean who's going to want to pay money for something that takes up room, when your tv has all of the same functions?
lol, they're definitely not phasing it out.
Your assumptions is correctly put "I don't need it because I'm ok with the functions on my Smart TV". Keyword 'I'.
Its one of the best streaming devices out there, miles better than my Samsungs Android/SmartTV OS and the Airplay feature.
it takes up room? I hardly believe that's the case for most, the thing is smaller than the palm of my hand. For me it takes up an HDMI port, which I solved with an HDMI HUB.
Not to mention the hardware makes it almost limitless in terms of what it can do compared to a roku, google chrome cast or a Smart TV.
You're literally going off your own perception of things.