Recently watched a short mini documentary about Patlabor
- Headgear the team that created patlabor owns the IP.
They maded the world and characters and managed to make different media for it. This allowed them to do what they want and create different types of media such as comics and live action (Though it did not do so well).
Recently there is an attempt to make a remake of the franchise to re-introduce patlabor to a new generation of audience.
If you own your own IP you can re-introduce it to a new generation.