The price doesn't need to go anywhere. It is very possible that some miners have naive expectations and so much hashing power will be sold that it pushes prices out to a 33% annual ROI (3 year break even). As the market becomes saturated some miners may become disillusions and simply sell their rigs for a loss.
Price drives difficulty but difficult doesn't drive price.
That is true, my point was that the only way anyone will make a profit from ASIC mining once everyone embraces it is if the price goes up.
If it doesn't, and stays at the current level, once enough people get into it, no one will break even at current market prices.
I mainly just calculated the number of ASIC systems needed to reach that point. Which - doesn't seem like a lot... A few months of sales?