It's a political choice not to (for example) impose import taxes on goods based on the difference between wages in the two countries concerned.
Not doing this is bad for people, but good for capital.
Like, I'm Irish, so I have benefited from this trend for my whole life, but that doesn't make it right.
Literally hundreds of millions of people in the Third World to were able to raise themselves into the global middle class over the past few decades.
The main people hurt by the outsourcing trend have been middle-class people in wealthy countries who had well-paid, lower-skill jobs producing physical things which are now shipped in from far away.
Good for foreign labor, good for capitalists, and bad for the middle class in rich countries.
This could have even been a win-win-win, if managed more carefully — Germany had pretty robust job retraining programs for people who lost factory jobs. I'd imagine the UK did not.
We should be honest about who benefited, as well as who was hurt.
Yes. Trade is supposed to mean that no side of the bargain loses. If my country's working class loses, I'm losing. It's not our job to impoverish ourselves for other people's good.
Globalization is why extreme poverty has plummeted in the last few decades. Hundreds of millions of people chose to leave their subsidence farm to work long hours in a factory because it's still an improvement for the quality of life of themselves and their families. Sure it would be better if an Indonesia factory worker got paid $20 a day instead of $10, but nobody is offering them $20 and you can't force anyone to.