yes they will.
Microsoft already made a "price increase" and it did not hurt them
sony can easily do the same. theire only 1tb model in the us was / is the cod bundle.
plenty of room for a standard 1tb sku at 349 and imply nearly the same value as 500gb for 299
also this 299 is just a black firday weekend promo. every one knows price will go up again. the general shopper is not that price sensitive, like the bf bargin hunter