If you're an employer then, from a pure cold calculating stand-point, nobody would blame you for having that thought for you wouldn't say it out loud. If your country is the destination of choice of many talented people, you'd have access to a larger pool and an advantage over other employers in countries that are less attractive. Also, none of your tax dollars went to educating and training these prospects.
Think about the influence the exodus of the Soviet Union's best and brightest had on the U.S. The influx of that massive brain power had tangible consequences. It wasn't the first time this had happened: many of very bright scientist and engineers fled (or were "paperclipped") to the U.S. during/at the end of WWII.
For the U.S. in general, this was a windfall and it was a direct consequence of dire conditions in Europe. The newcomers crushed anyone not at the same level who was getting by fine hitherto, many of whom quit academia altogether.
Think about all the people trained for free as M.D's or engineers in other countries who are not able to find jobs for lack of degree recognition in the U.S. and are forced to work as nurses or paramedics or jobs for which they are overqualified which effectively raises the bar. The U.S. and several countries are getting talent that was subsidized by other states.
But it also works, slightly differently, within the same country. If unemployment is high, many qualified people are forced to take menial jobs. For employers, this is a windfall. There was a manager in Courchevel on TV that could hardly hide his joy about the economic conjecture. He was showing the news crew the résumés of people applying for unqualified jobs. People with college degrees in STEM, speaking many languages. For a place at a high-end resort like that, snatching people like that with the same pay an average person would get is a very good deal.
It hurts people who are not yet established in their careers, and some people who are but are unwilling to evolve. Recent graduates must hit the ground running jumping from a truck going a 100mph.