[DerpDerpDerp]

It's also possible that there is a legitimate reason (from a business perspective) they'd preferentially hired white tech workers, such as socioeconomic class leading to better training. (We see this effect in other places.)

I highly doubt that many of the confounding variables (age; exposure over time; socioeconomic status; etc) have been ruled out to come up with that statistic.

Not that I don't think there's a problem, just saying, the businesses might not be racist so much as minorities underperform (relative to their potential) because of socioeconomic factors. If that's truly what's happening, I'd argue that the place to combat that is the economics of the situation, and not attacking businesses for making prudent decisions.