Stock photography sales are in the many billions of dollars per year and custom commissioned photography is larger still. That's a pretty seriously sized ready-made market.
> But if doesn't spit up exactly what you want can't edit it further.
I suspect there's a big startup opportunity in pioneering an easy-to-use interface allowing users to provide fast iterative feedback to the model - including positional and relational constraints ("put this thing over there"). Perhaps even more valuable would be easy yet granular ways to unconstrain the model. For example, "keep the basketball hoop like that but make the basketball an unexpected color and have the panda's right paw doing something pandas don't do that human hands often do."