Should mickey mouse stay in disney or be open for anyone to sell?

in 75 or 50 years since walt disney died, in years mickey mouse and other disney characters will be open for anyone to sell just besides disney world

Mickey Mouse and the other characters should be a Disney owned product forever. It's not right for others to sell anything with the images. They are a trademark and rightly so.
Any monies made from Disney character usage should go directly to Disney since they are responsible for their creation.

Of course he should stay Disney. Who else would you expect to own him? No one gets their filthy hands on Mickey!

mickey mouse would not be mickey if not disney

What are you talking about?
Disney world owns the copyright to Mickey and all the characters anyone who uses his or their likeness on merchandise has to get permission, and pay a royalty. That will never change, regardless of when Walt died.