You guys just don't understand how good of a job KU really is. We signed Self after he had tons of success at Illinois. Izzo was actively interested in the KU job back when Roy left.
1) That was a decade ago, before the Big Ten hit the jackpot and now has revenues that are out of this world (MSU has the highest operating margin and revenue of any program in the nation, I believe...)
2) Izzo is a lot older now. It's much less likely to pull an old guy away.
KU will get a good coach, but a lot of the elites are going to have a harder time because most schools (except us) are keeping their good coaches, and a lot of the really good ones with KU acceptable resumes are already in great and/or elite jobs and probably don't want to take that risk.
KU was a CLEAR step up from Illinois. MSU and KU, given what Izzo has built, is not that much of a step up.