While I don't believe that Western Europe caused wars in the Middle East for cheap labour / increased birthrate, I do see how big European corporations massively benefit from having a large influx of refugees. They do the jobs that natives don't want to do anymore. If you are looking for a garbage collector, a native will likely want 150% of minimum wage for that job. A recent refugee eager to start working has no problem doing the same job for minimum wage and zero benefits.