It is not a a question of cost
Another is to hire students and (paid) interns,
A gang of students (even well paid ones) + 1-2 grey beards have always been more cost effective than sending something to a warm and hot climate.
The problem is that you cannot create a business model out of that and you cannot skim and pocket on the process. There are no junkets, free dinners with old school friends, etc either.
You also have to treat students like humans - accommodate their schedules, goals, etc.
So, what's the fun in that? Also "what is in that for me" for a given CXX value of "me". None. So definitely, outsourcing it goes. Under Consulting guidance.