"What these people don't understand is that they are lowering said life style."
What do you expect them to think? "Oh, sorry, I don't want to affect your much higher standard of living. I'll just stick to my subsistence living with my postgrad education then."
Would you care that you were "lowering said lifestyle," if half the standard of living where you're going is multiple times better than the standard of living where you are now? Probably not. I certainly wouldn't.
The blame doesn't fall on people wanting to work for a better life. I don't blame them at all, and most of them are good people, just like anyone else. I do blame a system that is stacked toward hiring foreign nationals before citizens. That's a policy problem and a regulation problem, and to a lesser extent, a problem with the businesses that take advantage of these policies -- although they're making good business decisions.
Most of the blame, though, lies squarely on the shoulders of elected officials, and the people who elected them or failed to participate. We can't just not pay attention and then expect things to work themselves out. Nobody is going to give more of a shit about your interests than you do, so make your voice heard, and tell others to do the same.
The tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in a democracy. -- Montesquieu