Yeah but they're competing with Hasbro in a way. Hasbro may be justified in seeing 3rd party item makers, when they make actual character-toys, as impeding on their potential to do so themselves. I think there's a fine difference between making accessories which compliment Hasbro's toys (e.g. City Commander) and making toys which compete against (or can be perceived as potential competition) Hasbro's toys. For example, let's say the 3rd Party Junkion came out -- and later Hasbro wanted to retool RtS Wreck Gar as their own Junkion -- Hasbro would have a case in arguing that the 3rd party Junkion provides an alternative to their own Junkion, and thus is a form of competition. Competition created by a 3rd party using Hasbro's intellectual property.

I think Hasbro's happy to turn a blind eye to complimentary 3rd party items, but I don't blame HasTak for not allowing the same grace to potentially competitive items based on their property and used without permission.