To answer my own question, schools from west of Kansas/Oklahoma/Texas have only occupied 10 out of 104 FF slots since 1990. And those positions were taken by 5 different schools. I know there are fewer schools west of Kansas, but that seems like a very low number. Isn't California the most populous state? Back when I was in school (circa 1970) people use to complain how UCLA/USC/UNLV were dominating the tourney.