I agree with many points in the article, but it seems to me his core point is that alternatively economic and political models to capitalism should be taught in business schools.

It isn't clear to me that this is a job for graduate business education. The author clearly has an agenda to change either some aspects or capitalism, or to change economic systems entirely. I don't know why he thinks educating business school students differently is going to be something of a catalyst for change of this magnitude. People are studying these degrees with the sole aim of advancing their careers within a capitalist system. If you want political or economic change, these ideas are going to have to be spread throughout the general populace, as most of us here live in democracies.

I also don't think its clear what system would be better than capitalism, despite its flaws, and asking a curriculum to give focus on some alternative system which is completely unproven is a big ask.