Q: Why is Intel charging so much? A: Because enough people pay. Q: Why do people pay so much? Why do they pay a high premium for top performance? A: Because, considering all factors, it's worth that much for them. For many it's too much but for many others it's ok. Q: But it's the same silicon! A: Manufacturing cost plays little role when the price is not dictated by a race to the bottom between different manufacture…
Your same answer would apply to IBM's mainframes in 1990 and Sun's servers in 2001 too, and the point of the article is to associate Intel's current position with those products, which clearly reached peaks at those moments.
Personally I don't really buy it completely either, but quipping "because the market!" as an answer is missing the point. The article is about what that market desire means for future revenue.