What did you expect?

Mickey is a mouse. He talks, lives an a house, wears clothes, drives a car etc.

Donald is a duck. He talks but no one can understand him, wears clothes but not pants, etc.

Goofy is a dog, he talks, wears clothes, lives in a house, drives a car, etc.

Pluto is a dog, he doesn't talk, can't drive, lives in a dog house, etc. In terms of the cartoon universe it was only a matter of time before he was demoted to a lesser status.

Maybe if they had named the planet Goofy to begin with they could have stood a chance.