Hey, hot take, but if a company decides they no longer want to distribute a piece of media they own the rights to, then they should be legally required to sign the rights back over to the creator.
They shouldn't be allowed to just sit on the IP for the rest of time, especially if they have no intention of ever releasing it again.
Fifteen years ago, the tv animation world was changed forever when a little show about a sailor boy with an adventurous spirit premiered on CN. Although it’s run was short, the series led to a renaissance of animated shows, such as Adventure Time, Gravity Falls, Regular Show, and more. So thanks, Flapjack, for being the godfather of 2010s animation.