I asked a question about Why Intel dropped the Itanium and it was well received (IMO), but was closed as "Not Constructive". Is there any reason why it would be closed?
Most questions that ask "why" a manufacturer did or did not do something are unlikely to be answered with a clear, definitive questions and foster discussions. The answer with +14 votes was exemplary, but I assume that the closing of the question was on principle. (Good question too!)