The demise of ANSETT began when the The Slaves of Neptune went to the The Swamps of Jupiter and created The Fires of Mercury. After The Robot Revolution sold off The Rings of Saturn, and set off The Volcanoes of Venus, all that was left of The Shrinking Spaceman was The Cloud of Death and eventually The Wandering Asteroid became The Dark Planet, all in just the first season.
There you go Captain Dart, I googled it.
sui generis