Known as "Outsourcing" and has been going on for years in other industries. Ever wondered why when you've phoned a call center the person on the other end of the line has an Indian accent ?
High speed internet has made it possible to use cheap English speaking workers located thousands of miles away. Many jobs which don't require a "hands on" presence can be done from abroad; administration, accounts, customer service just to name a few.
Unfortunately that's the way things are going, look at the manufacturing and textile industries. Modern transport and communications has brought everything closer.
Time to think of reskilling if you're employed in an area at risk.
There are advantages though, I'm having dental work done in Bangkok at one third of what an Australian dentist would charge.