Dire Bare
Legend
Hmmm, they did, once upon a time.
Part may be Hasbro policy - but I do not know if Hasbro actaully has such a policy.
More publicly, it is so WotC does not directly compete with their retailers. If folks can go directly to WotC then there is no need to go to Mom & Pop's Local Game Store to buy the newest and shiniest.
WotC had it's own direct online store, plus WotC branded retail outlets, plus the purchase of the Gamekeeper retail stores. I'm pretty sure WotC dropped all of this well before the Hasbro acquisition.