Everything which is not recognizably a circular fox-thing is something else.
Hypothesis: marketing people are afraid to continue a brand identity that can go on for decades, because that kind of success means that they don't have a redesign project every three years.
AT&T has been a variation on the Death Star since 1984.
IBM has been horizontally striped initials since 1972.
NBC is a peacock.
McDonald's is golden arches.
Firefox should be a flaming fox chasing its tail.