[Glyptodon]

So if someone sketches Batman do you sue Bic?

[stubish]

If Bic made a pen that came preloaded with unlicenced images of Batman and guided you to reproduce them, then yes.

[kingkawn]

Are they producing batman on an industrial scale to generate profits/market share that investors value?

[jdiff]

Prompters aren't artists, and neither are image generators. The corporations that create these generators are responsible for the content they illicitly fed into them that they are now spewing out.

If you sell me an endless coloring book that occasionally spits out copyrighted content, that's on you.