[gamblor956]

Hollywood deals with this by giving the originators of ideas story credit. There are fairly detailed rules about how much of the final product needs to derive from their contributions to the final product for the credit to apply.

[izzydata]

Disney stole the entirety of The Lion King scene for scene from a Japanese anime while claiming it to be a 100% completely original Disney made story.

[gamblor956]

Both the Lion King and Kimba are based on Hamlet...

And the story of the Lion King has almost nothing in common with Kimba. Have you actually read the manga or watched the anime? The anime is about the cub growing up, which the movie entirely skips over. Kimbas life before the anime is completely different.

While minor scene elements and secondary characters were inspired by the anime they don't rise to the level of requiring credit.

[nitwit005]

There have been repeated accusations in Hollywood about just this sort of theft. It seems to be how two highly similar movies sometimes get made at around the same time. Studio 1 steals idea, studio 2 does the right thing and pays for it.