Exactly. There are lots of tours but how many "need" to hire expats? I'm sure you can get a job with one if you try hard enough.
A few places I've seen are EC 120 and 130's in New Zealand. There some version of the 206 flying in Belize. R44 all over Argentina. Specifically down in Ushuia. There's helicopters flying over the Nazca lines in Peru. Bells? Also, while you wouldn't be an expat, ther's some R44's in Puerto Rico.
Or you can start your own. My free business idea for the day....
Cabo Mexico. An untapped market for tours. Big tourist trap. Lots of money down there. Lots of big expensive beach resorts. No helicopters. You could give rides from the little airport an offer vip shuttles from the big airport to people's beach resorts if you get resorts in on it. Most of the locals and tourists speak english. Heck, they even price it all in US dollars. Ask a bartender how much a beer is in pesos and they pull out the calculator.
I give this free idea away because I have no intention of ever owning a tour buisness or living in Cabo. I only ask if you get one started, let me know and I'll come visit for a free ride with my family