Harry might walk away because he has a new mission that he can't share with others. He realizes that to protect the wizarding world in a more fundamental way, he has to go it alone. So, he quietly walks away from his normal life to pursue this unknown and dangerous task.
Maybe for love. They might have fallen deeply in love and want to be away from the prying eyes of the wizarding world.
There's no real reason for the Potters to give away fanfic. Fanfic is a fan - created content, and the Potters are fictional characters. They don't exist in the real world where fanfic is created and shared.
They might run away because they want to explore the wizarding world on their own terms. Without the restrictions of Hogwarts or the watchful eyes of the Ministry of Magic.
One reason is copyright infringement. If the fanfiction uses too much of the original Harry Potter material without permission, it can be considered forbidden. Another reason could be that it contains disturbing or immoral content that doesn't align with the family - friendly nature of the original series.
One reason could be copyright issues. The creators of Harry Potter own the rights to the characters and story, and fanfiction often uses these without permission.
He might flee because fanfiction can sometimes distort his character. In some fan - made stories, his personality, values, or relationships could be changed in ways that are untrue to the original. For instance, if a fanfiction makes him act cruelly when he's supposed to be kind - hearted.
One reason could be copyright. The creators and rights holders of Harry Potter want to protect their intellectual property. Fanfiction can sometimes blur the lines of ownership and might use elements of the story in ways that aren't authorized.
Perhaps they fear that fanfiction could deviate too much from the original themes and values of the Harry Potter series. The official story has a certain moral and ethical framework, and fanfiction might distort it.
It could be that the Harry Potter brand wants to control the narrative more tightly. Fanfiction can sometimes take the story in directions that the official creators don't like. So, to maintain a certain image and story integrity, they might be discouraging fanfiction.
Maybe they were forced to. Some fanfictions could depict a situation where an external power, perhaps a more powerful dark wizard or a corrupted magical organization, compels them to give Harry away. This could add a layer of tragedy and helplessness to their story.