The imperfection framing is backwards. The value in that dance performance was not the error, it was the exposure. The person on stage had trained for years to shrink the chance of failure, and still risked it in public. AI can reproduce the output but not the exposure.

Character becomes competitive for the same reason: it costs consistency over time. You cannot prompt consistency, you can only observe it. That is exactly the thing a text generator has the hardest time faking at scale.