Ive heard of Citizen Kane, but not The Magnificent Ambersons. Why?
The Magnificent Ambersons was supposed to be as big as if not bigger than Citizen Kane, but many events contributed to this classic becoming an obscure Hollywood memory (see next FAQ). The short explanation is that Ambersons is an artistic film that was not well received by mainstream audiences when it was released, and it just never caught on the same way that other classics do.