[alberto_ol]

The video is by the mathematician Michel Talagrand.

https://en.wikipedia.org/wiki/Michel_Talagrand

A surprising tip from his personal page.

"If you are desperate to get my books and your library can't afford them, try to type the words "library genesis" in a search engine. I disagree with piracy, but this site saved me many trips to the library, which unfortunately does not carry electronic versions of older books."

http://michel.talagrand.net/

[xanderlewis]

It’s not that surprising to me. For academic publications, it’s generally only the publisher who makes a significant profit — and even then it’s probably negligible in most cases.

I’ve even been personally sent PDFs of books by the author under the condition that I don’t tell anyone.