I read. I read to enjoy how writers manage their highs and lows in an arc and work towards a conclusion, the good parts. I read and sometimes feel like, "Shiiiit. Can I do something like this but better?"
A few stories could have parallel similarities, but enjoy distinction in the details. For example, I might have kings and queens in a story, and there could be betrayals in that story. This is common. But the underlying tension and theme, as long as that's original, I think that's what makes the story differently beautiful.You look hard enough and you might find similarities in certain stories (of a similar genre) even if the authors may have never read the other's work. We draw inspiration from everything, and even research is something you remix as inspiration to put into words.
Just my opinion though! 