Exactly, you might get lucky as you just did but "canvassing" (running an ad for months collecting numbers) pays off sooner or later.
Escorting is an unpredictable activity. I know locals guys who go from 1 week with 6 guys to the next week with zero... In one trip to X city they make 4,000 in 4 days (including an overnight obviously) and 1,600 on their next trip to the same place.