I think one reason could be that authors are influenced by what's already successful and tend to imitate. Also, the market might be demanding similar types of stories. But it's not true for all modern novels; there are still unique ones out there.
Maybe it's because there are certain popular tropes and trends that many authors follow. Or it could be that publishers are looking for familiar formulas that they think will sell well.
Not all Chinese manhwa are the same. It could be that the ones you've come across happen to share some similarities, but there are many unique and different ones out there waiting to be discovered. Different artists and writers bring their own creativity and perspectives to the table.
Often, it's due to limited perspectives and a narrow range of interests in the media. Maybe there's not enough exploration of different angles or underreported stories, leading to a perception of sameness.
Well, it might be because some common tropes and themes are often reused. Like the hero's journey or magical powers.
Well, it's not really true that all have the same tech. Sometimes, limited imagination or a desire to stick to familiar concepts might make it seem so. But there are plenty of fantasy stories with innovative and diverse technological elements.
Well, maybe it's because of some common art styles and trends in the industry. Not all are the same, but some similarities can make it seem that way.
It might be because many religions address common human concerns and questions about life, morality, and the afterlife, leading to some overlap in themes and stories.
Routine is the main culprit. We often follow the same schedule day in and day out, like getting up at the same time, going to the same work or school, and coming back home in the same way.
There were many styles and types of online novels, but they generally had some similar characteristics. This was mainly because the creation of online novels was often completed by some experienced authors or teams. They might have similar creative ideas and inspiration, or they might have common experience or knowledge in some aspects. In addition, the creation of online novels was often carried out in a relatively closed environment, which made it easier for authors to form similar writing styles and plot ideas. The reason why online novels have similar appearances is mainly because their creators have similarities in creative ideas, plot settings, character creation, etc. At the same time, they are also affected by factors such as subject matter and market demand.
The content of the novel was similar because the inspiration for the creation of the novel came from various sources, including personal experience, social reality, historical events, and so on. When writing a novel, the author would usually try to choose one or more of the topics and incorporate them into the novel. The theme of a novel usually involved human emotions, desires, conflicts, and growth. These topics may differ in different novels, but there are usually some common points. Therefore, when writing a novel, the author may choose some similar theme and plot to better express their thoughts and feelings. In addition, the process of writing a novel also required a certain amount of imagination and creativity. The author needed to come up with a storyline, shape the character's image, construct a worldview, and so on. All of these required time and energy. Therefore, when writing a novel, the author might choose some similar structure and plot to better express their thoughts and imagination. In summary, the content of the novels was similar because the inspiration for the creation of the novel came from various sources and the creation process required a certain amount of imagination and creativity. In addition, the theme and plot of the novel have certain similarities, which leads to the content of the novel being similar.
I think one reason could be that there's a limited range of themes and scenarios explored in dystopian fiction. Also, the publishing industry might push for similar styles and plots to meet market demands.