Like I said before in another thread, it will all depend on pricing, games and marketing.
And you know... I think the biggest competition this is gonna face comes from the Android market. Anyone that takes a little bit of time to do a research will find MANY tablets for less than $200 that will allow you to play N64, DS, SNES, NES, PSP, PS1 and PS2 games on the go. Heck, there are several chinese tablets that even come with dozens of those games pre-installed and cost less than $150. And mind you, all of these tablets DO give you the option to play on your TV, and some of then actually have physical controllers.
Now, of course none of these tablets offer you the "hassle free" set up. And you wouldnt be able to play the latest Nintendo games on them.. but being able to do all that retro-gaming on the go for less than $150 really is a tempting offer.
let me just give you a few examples:
https://www.youtube.com/watch?v=GfJaMRM7qjI
https://www.youtube.com/watch?v=jwgKazoE-jk
