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.
There could be a lack of new inspiration in the fan community. After so many years and so much fanfiction already written, writers might be feeling that they've explored all the possible angles and stories within the Harry Potter universe, leading to 'harry potter no more fanfiction'.
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 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. 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.
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.
I think Harry would be more powerful in the long run. His magic is constantly evolving and he has the support of the entire wizarding world. He can learn new spells and has access to powerful magical artifacts. Edward, while strong and fast, is limited by his vampire nature. He can't use magic and is vulnerable to certain things like sunlight (even if it doesn't kill him). Harry has faced much greater threats like Voldemort and come out victorious.
It's hard to say who is more powerful. Harry has magic, which gives him a wide range of abilities like spell - casting, flying on a broom, and using magic to defend himself. However, Katniss has her survival skills, her archery skills are top - notch, and she is very good at thinking on her feet in dangerous situations. In a direct combat situation in the woods, Katniss might have the upper hand as she can hide and attack from a distance. But if it's in a more open magical battlefield, Harry's magic could be more dominant.
Because fanfiction is a way to keep the magic of Hogwarts alive. Harry Potter, being the hero of the story, would understand the importance of that magic and want to protect the creative works that continue to explore Hogwarts.
For entertainment. Just like anyone else, Slytherin students would be interested in exploring different stories set in the Harry Potter universe.
Harry could be interested in the Muggle technology used in Grunnings. As a wizard, he has seen magic all his life, but the Muggle way of doing things fascinates him. Buying Grunnings gives him a chance to study and perhaps even combine Muggle technology with magic in some innovative ways.
He might visit the goblins to retrieve a family heirloom. It could be something that was lost or stolen and the goblins are the ones who know its whereabouts.