And what evidence do you have for this? We aren't talking about off-the-shelf, pennies per chip PICs here. These things would not only have to recoup the design

And what evidence do you have for this? We aren't talking about off-the-shelf, pennies per chip PICs here. These things would not only have to recoup the design costs (not cheap for this level of complexity), they would be expensive due to the previously mentioned huge caches (basically RAM on chip) and the fact that you really aren't going to get by with web browsing without something Turing complete.