School of hard knocks does not charge the billionaires, millionaires, and business owners it interviews. Stop spreading false narratives.

You're asking how he visits people's homes if he is not charging them.
It's called arranged networking. People who know those billionaires and millionaires connect them and they arrange for interviews at their scheduled time and location.
It's a Pr for the interviewed and more social growth for the interviewer which is monetized through other means.