Stocks going up doesn't actually improve things for anyone. To use Microsoft as a specific example: that stock price increase corresponds directly to a reductio

Stocks going up doesn't actually improve things for anyone. To use Microsoft as a specific example: that stock price increase corresponds directly to a reduction in quality of life for many people. This is, of course, immaterial to your main point: we can point to many actual contributions from migrants, such as maintaining infrastructure, providing food and education, and technological advancements.