And we should consider ourselves lucky as engineers that we work in an industry where we are so in demand that are able to do that. Workers in other industries (the article talks about a firm that re-sells beauty products) might not be so lucky.
Couldn't afford to leave, so I had to do it. I've left now though when I finally lined up something better.
And no, they don't have a good choice, because the pay and opportunities in many countries just doesn't compete well with those sites.