People are entitled to their individual choices. If it's too much information to process, they can individually choose someone they delegate their decision making to. One way they do this is to trust a particular certification and only buy products with the certification seal. But each individual should get to choose which party plays the role of delegate for them.
Resorting to one-size-fits-all regulatory/union monopolies shows a lack of imagination that deprives individuals of their agency and breeds corruption/rent-seeking-behaviour.
As for this case, it's pretty clearly theft, and should be dealt with accordingly by the legal system. Customers/workers shouldn't have to band together to punish theft.