I think you skipped this point, or I misunderstood. I work as a management consultant and get regular request to help people (eg is the job something for them, practice interviews, etc). It’s internally encouraged to help in this way, but I’d be extremely hesitant about taking money for it because I don’t think it passes the blush test (couldn’t tell this to a colleague without blushing), and creates wrong incentives (eg there are things about the recruiting process that should not be shared)
Anonymity only strengthens the impression that it’s not ‘kosher’ for me
What are your ither ideas to tackle this? (And perhaps you get sufficient people with just anonymity, that’s fine too :)