[PurpleRamen]

They already do that now, even for less stuff from less than 20, 30 years. They reboot, remake, continue anything for whatever reason. Money is relevant, but by far not the biggest hurdle to prevent them. The permissions of the right holders and the influence of the creators are more important IMHO.

For example, Netflix just now announced a reboot of One Piece Anime, a series running for 25 years. The creator is still working on the original source. Imagine if Netflix could just do that on their own, the creator had no influence at all on their work. They could just make shit along the way as they see it. Twist it, change it, with their power, they could be damaging the original work for good, simply because they are bigger.

[phantom784]

Perhaps trademark law could help? E.g. Netflix can make their One Piece reboot without permission, but it has to be named in a way that makes it clear it's not licensed from the original creator.

[freejazz]

Trademark doesn't protect individual works, it protects a brand.