I don't have any specific insight into the Samsung foundry business. But as a whole Samsung seems to be doing remarkably well. But even Samsung doesn't have unlimited resources. I suspect they are putting more resources into other parts of the company where they think they might get a better return on investment. For instance,I was a bit surprised to read recently how much they are spending to expand capacity for OLED displays.
12/9/2010 Peter Clark headlines with "Counterpoint: Samsung's foundry challenge will succeed". I happen to believe that both items can be true simulaneously: "Samsung does not [currently] look or act like a foundry" and "they will [in the end] succeed". What I see in the folks I interact with at Samsumg suggests they are sharp, work hard, and catch on well. My recollection is they've made noise about being serious with succeeding at the foundry biz and they've invested for success. They may or may not "get it"... but they will.
When the communist government of China takes over Taiwan, and when "re-unification" occurs on the Korean penninsula, the US is going to be in a very poor position to access semiconductors. Oh well, I'm sure Barak Hussein Obama will take care of us.