In the US at least, anti-trust laws seek to limit business practices considered anti-competitive. Sure, a "union" could seek to reduce competition/harm businesses, and that is a common accusation, but similar laws for unions are mostly a thing of a past, legacies of a time when state militias did combat with those despicable striking coal miners.

Do you believe that businesses should have the same legal status as individuals? There's been a tiff over that for the last decade or so.