I will (also) suggest that you target cooperation HR departments.
Seriously, - the money hangs loose on managers that needs a cool team building event.
In my current employment we have had escape rooms, bowling, go carts, dinners, and even a couple of live roleplaying sessions.
This will require creating an excellent one evening session for non-experienced gamers.
I.e. probably have (mostly) predefined characters (with background the participants can read beforehand).
A mostly recognizable setting, - i.e. low mythos Call may be better than fantasy.
I have a scenario collection at home for Call called something like ‘Blood Brothers’, that have stories reflecting classic horror movies, and as team building events something like that could work.
https://www.amazon.co.uk/Blood-Brothers-P-Call-Cthulhu/dp/0933635699/ref=sr_1_1?s=books&ie=UTF8&qid=1539871049&sr=1-1&keywords=blood+brothers+roleplaying With a story ready you get a friend who has sold his soul to the cooperate machine to recommend trying it as the next team event.
You show up with a few cool props and do your GM magic.
As soon as you have some good review, you could have a spot in the entertainment industry.
As for money: My team in Denmark usually have around 300 DKK (= 50 $) per person for such events. So running a session with a team of 6 could bring around 300$. Not alot, but probably more than you could milk usual gamers for again and again in a long campaign.