"Preparatory industry" is a bit much. I ran into a YT channel run by a guy currently employed by FAANG as a hiring manager and selling courses for how to pass

"Preparatory industry" is a bit much. I ran into a YT channel run by a guy currently employed by FAANG as a hiring manager and selling courses for how to pass his own hiring interviews. With that, plus bootcamps, I think "preparatory industry" is a fair term.