The KC Cheifs or St Louis Cardinals have a logo. Any Manufacturer that want to put their logos on any product has to pay for the priveledge, thus the logoed T Shirt is $$ more than the plain one or one with a goofy picture. Same with any Logo, GM, Ford, Warner Brothers Characters, Disney Characters. All these are copyrighted "logos" you have to pay to be able to sell things with the logos on.
So far model railroad locos/rolling stock has NOT had to pay, they freely copy logos and sell their locos/rolling stock. All UP is asking is that their "Logo" be treated the same as any other corporations. IE: "If you want to use it, pay us for it just like you would any other company".