Use of AI models is far from "free". Even given their prior existence, ignoring their research and training cost, AI models like Stable Diffusion require energy and computing resources to execute, and require iteration and selection labor for raw image content to be created. Once raw content has been created, the content still requires processing (i.e. color correction) and integration (i.e. editing, scaling etc.) labor. If analog reproductions are desired, they also require capital to produce.