It seems correct to me. If I get a degree from MIT, somebody else can't. They have limited spots. He is promoting models of education for signaling employers that are not zero sum.
MIT has takes 3,000 students, Canadian universities take 30,000 students. (Remember Canada has 30 million people and US has 300 million.)
- https://web.mit.edu/facts/enrollment.html
- https://www.univcan.ca/universities/facts-and-stats/enrolmen...