I think the analogy would be more along the lines of Izzo retires, Painter takes over at MSU, and the recruiting slips a bit, because MSU isn't on the elite level of UNC, UK, Kansas, etc.
Yes. Kansas is a very bad example to include Painter because their state has no admission requirements. Their state bylaws used to read that no person seeking a college education would ever be denied the opportunity to attend a state funded college. Thus Kansas could lower their academic standards for athletes - especially one and dones.
but as new pal pointed out, if Izzo retired, and Painter took over, MSU's recruiting would dip, not very much, but to the level of other similar BIG 10 schools. unlike some schools, like UNC, Izzo is the attraction/factor. and he's a lot more than 50%. he's basically the only reason elite recruits go to MSU.