Trademark only works if the infringement is in direct competition with you. They need to be in the same trade as the person/company that owns the particular mark of the trade.

A plumbing company could use Mickey as a mascot, (and even claim Mickey as their own trademark for plumbing, preventing Disney from using it for plumbing-related marketing in the future,) because Disney isn’t a plumbing company so they can’t claim a plumber is infringing on their trademark. Since the plumber is in an entirely separate trade and isn’t competing with Disney, Disney can’t claim trademark infringement.