I don't know why OP is getting down-voted for sharing an interesting story. The bottom line is that every action has an equal and opposite reaction. There is no such thing as a free lunch. Everything comes with a price. Etc, etc. These cliches are cliches because they are inherent, inevitable life truths.
I don't understand why people get surprised or act shocked when they learn that for most every upside, there is also a downside. Yes, when you attract more out of state students, paying a higher tuition rate per student, then the college has more money to spend on faculty, facilities, and operations. And yes, this also means that the percentage of in-state students would also logically HAVE to go down, it's simple math. But those in-state students also benefit from the higher tuition rates that their out of state cohorts are paying.
I don't know Phil Knight and haven't researched him, but everything in this world costs money. That's why they call it money. Oregon has benefited tremendously from the money that he has given them. Anybody putting on their shocked face when learning that a Billion dollars of "donations" comes with some strings attached needs to grow the fvck up.