I know that ThreeStooges.com is there selling their coffee and tshirts and calendars, and promoting CurlyG (the grandson of Curly) .... but is THAT the limit of Comedy 3's reach? If so, then ALL THE LUCK to them!
Comedy III - Owns the likeness of The Three Stooges and can sell merchandise.
Sony - Owns the old Columbia films, which includes any film made at Columbia by The Three Stooges.
Comedy III can sell t shirts and coffee mugs, Sony can’t.
Sony can sell a copy of A PLUMBING WE WILL GO, based on buying the film prints Columbia had in their vaults. Comedy III can’t sell you a copy of A PLUMBING WE WILL GO.
Since Sony owns the rights to the films, the DVD’s they sell, based on materials they bought from Columbia, are the official canon.