No doubt, money will left for Oregon and Nike will still be partners with them but no matter what happens, it won’t be the same as Phil being actively involved making sure the funds are being sent.
Once Phil goes, the money is coming out of someone else’s pocket that I can guarantee you doesn’t care as much about Oregon sports as he does.
He is supposed to be worth $30+ billion. I would be shocked if his estate plan doesn't include plenty of money for an endowment fund with a billion or two to keep the Oregon athletics near the top of the revenue pile for all of college sports long after he is gone.