Buffett talks about “durable competitive edge” a lot.
Here is a video (scroll down the article) he used Berkshire mill, the first major company he bought in 19060s, as an example to explain this concept.
Also I watched the “Buffett goes global” show on CNBC in the weekend, I am sure CNBC will run it again just like the other two shows about Walmart and eBay.
This is a much better show than Jim Cramer’s Mad Money, in terms of education value. I watched the Mad Money mostly for entertainment, along with Fast Money, etc.