No. The cost of producing the art and compensation to the artist are commonly accepted reasons to pay for art, but many other factors also contribute to art not being free, such as the economic models and copyright laws of most areas of the world.

One example of why art may not be free that is not based on labor/material cost or artist compenation is a speculative art market
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence