I think copyright should be changed generally here, there's no reason a drawing of a mouse should stay copyrighted for decades after it's original creator passed away .

Imagine if copyright at works went into the public domain after 25 years. So many books, albums, and games are in this bizarre limbo where the rights holders may no longer exist, but they can't be freely distributed due to copyright laws. Or even if the rights holder does exist, they might have no interest in releasing the material due to current creative differences ( or licensing, tons of video games based around other intellectual property will never be released again).