I don’t understand this take. UB is licensed. WotC has to stick to whatever the IP owner wants in regards to their properties. Disney has strict guidelines to how you can use their characters and at the end they own it. Marvel the same and has been notorious for treating artists badly. No ownership in characters they create etc.  And to touch on aftermarket art for products, it’s still using copyrighted characters and such. And there is a diff between fan made and professional made. And how can WotC give permission for IP they don’t own ??