We've been seeing more and more stories about what is sold in Artist Alleys. Many companies (like Disney, Marvel, FUNimation, etc) are becoming increasingly uncomfortable with fanworks making money. But this isn't big media cracking down on the little guy. Characters, just like the actual content of books, logos, phrases and more are copyrighted. That means that companies and creators own the rights to produce works based on those characters, use their names, image, etc. While I can understand fans speaking out about these policies, it's well within the rights of these companies and individual creators to claim the rights to their work and prevent others from making money based on those characters.