How about simply hiring the people most qualified to do the job? That would probably be from the top schools but not necessarily. They still have to be able to do the job. History repeats itself particularly when people don't learn from history. Case in point, the early chemical engineering industry in the early 20th century. The guy who, in trying to create quinine artificially, ended up creating the world's first artificial dye was a Brit. But, he was taught by a German. At the time, the Germans were very good at opening universities and technical schools and letting anyone in on merit, never mind their family background. Back then in the UK, the people who went to the top schools got in because their family was wealthy and/or powerful. Because of this, the Germans kicked the Brits' ass in industry.
What's happening now is the very same thing. Instead of biasing towards the wealthy and well-connected rather than those who are capable, we're biasing towards other social groups instead of the capable. Countries that don't do this are and will be kicking our ass going forward.