An Nomura analyst is saying that he expects $50 Tablets! I don't think he realizes that cutting edge investment in technology and $50 devices don't exactly fit very well. At that price point, absolute prices will hinder development.
Kind of hard to sell something for $50, when the lowest priced tablets today cost in the range of $143 (Kindle Fire) and $184 (Google Nexus 7). That's "cost", mind you, before any vendor or retail margin.
I think the touchscreen by itself is probably close to $50, if you want the capacitive models. Sure, some really cheap Chinese based tablets with resistive touchscreens have sold for less than $100, but no one wants them, since they are absolute crap.