I always wondered why those generative voices dont capture the feeling of the text per segment and incorporate it to the output e.g. news, narration, first pers

I always wondered why those generative voices dont capture the feeling of the text per segment and incorporate it to the output e.g. news, narration, first person hunted by vampires, whatever. Seems like a kind of low hanging fruit. Disclaimer: I use tons of audiobooks so that might not be what people need in general