Perhaps it shows that Tony is really invested in Peter's growth and development. The fanfiction might offer unique perspectives on Peter that Tony can't get from their real - life interactions. It could also be a form of escapism for Tony, allowing him to explore different scenarios involving Peter in a fictional setting.
One possible reason could be that Tony sees a lot of potential in Peter. In the original story, Peter has great powers and a good heart. The fanfiction might explore different scenarios of their relationship, like a mentor - mentee relationship in more depth. Tony might be interested in how fans envision their interactions and the growth of Peter under his influence.
Another theme is family. Sometimes, Tony's obsession can be interpreted as a longing for a family connection. He might see Peter as a surrogate son, and this leads to his over - protectiveness and constant involvement in Peter's life. There are also stories where Peter fills the void left by other relationships in Tony's life.
In fanfiction, Tony being possessive of Peter can be seen as a form of over - protection. Tony, with his genius intellect and resources, might feel the need to safeguard Peter from the dangers of the world. It could also stem from a sense of mentorship and seeing Peter as a younger version of himself that he wants to guide and keep close.
There are quite a few. You can check out Archive of Our Own (AO3). There are many fanfictions exploring this dynamic. Some focus on Tony seeing Peter as a protege and becoming overly protective and obsessed in a father - figure kind of way. He might be constantly worried about Peter's safety during his superhero activities and invest a great deal of time and resources in training and guiding him.
Maybe he finds Stiles' character in the original work very interesting and complex, and the fanfiction allows him to explore more about Stiles in different scenarios.
A fanfiction might involve Peter Parker and Tony Stark being kidnapped during a mission. They are held in a high - security facility. While kidnapped, Tony uses his wits to analyze the security system, and Peter uses his enhanced senses to gather information about their captors. Eventually, they manage to outsmart their captors and escape.
Well, first of all, Peter has a certain charm in fanfiction. He's this young, smart, and talented kid with amazing powers. The Avengers are always looking for new talent and someone to carry on their legacy. Peter fits that bill perfectly. He also has a vulnerability about him which makes the Avengers want to protect him. His story as an orphan trying to do good in the world is also very appealing. The Avengers, being heroes, are naturally attracted to his good - natured self. They might also be a bit envious of his natural agility and quick - thinking abilities which they may not have in the same way.
Well, there's a fanfic called 'Peter Under Stark's Wing'. In it, Tony is very protective because he sees Peter as a sort of surrogate son. He's always there to patch up Peter after his battles as Spider - Man and he makes sure Peter has the best medical care available. Another one is 'Stark's Shield for Peter' where Tony actually creates a special shield - like device just for Peter to protect him from energy - based attacks. And 'Protecting the Friendly Neighborhood Spider - Man' shows Tony using his political and business influence to keep Peter's identity as Spider - Man a secret, which is also a form of protection in the dangerous Marvel world.
In the fanfic 'Peter's Vigilance', Peter's protective nature towards Tony is really well - depicted. It shows how Peter, with his youth and new - found powers, feels a sense of responsibility to keep Tony safe. He often stays up late at Stark Tower just to make sure no harm comes to Tony. This fanfic also delves into their relationship and how it grows because of Peter's protectiveness.