Or did Moore's law finally make brute force algorithms acceptable. Seems to me that most of the shortcuts that were taken had little applicability outside of the specific domain of playing chess. And brute force is fine when the rules and the possible combinations are fixed.
But the whole impetus of chess as a means of discovering the process of machine learning seems to have been unfulfilled. Perhaps the mystery has been taken away from chess, as we will come to see it as a problem that can be computed and calculated (just like addition and subtraction used to be viewed as a true form of human intelligence).
Ah well, there's always Go - where the computers are still getting the sh*t kicked out of them. :-)