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Maybe, but usually not. I worked in video games for 25 years, and the embargoes there were just polite requests. Nothing legal was ever signed with the retailers, we just asked them to hold stuff and they did.
In any case, it’s clear no laws were broken here anywhere. WotC are just being dicks because their marketing stunt didn’t go the way they wanted it to. They hired the Pinkertons because they’ve never heard of Barbara Streisand.
