One might argue that global connection through economic ties is what gave us thes last 50 years of relative peace. So even with talent/ip drain there's a solid humanitarian and cosmopolitan argument here that trade is just good for humanity even when "unfair".
I'm not saying thats the case here but I would not dismiss this as "nothing good comes out of that"
The past fifty years may just be an exceptional footnote. Fifty years is not a significant period of time and the peace we have endured has not been evenly distributed (nor does it appear to be stable).
But this is total childish nonsense. We gained 75 years of peace in Europe not because the war was terrible, but because the entire world was divided between the USA and the USSR. And, as it happened, these two countries decided not to fight each other in a full-scale war.
The reason we gained 75 years of peace is because France and Germany decided to form an alliance to prevent further conflict (considering they had just fought 2 wars in the space of 40 years), and, as a secondary goal, to reduce dependence on the US (de Gaulle being especially eager), starting with the Treaty of Rome, and evolving into the EU.
There have been no wars in Europe for 75 years because for those 75 years the United States single-handedly decided with whom Europe would start wars.