I work for a FAANG and it's a violation of company policy for me to profit from privileges associated with my employment.
That's why I was wondering whether the service would be legal. Thanks
Company policies aren't laws. Employees could be fired over it, but some would definitely take the risk, as they already do with providing mock interview services, moonlighting without receiving formal authorization, having 2 jobs, etc.
Of course it would be forbidden, the same way it's forbidden to sell mock interview services, yet they florish.