In the case of a model/actor, where their image could be suggested to be a form of work, mightn't there be a conflict of interests? That photo would obviously n

In the case of a model/actor, where their image could be suggested to be a form of work, mightn't there be a conflict of interests? That photo would obviously not be as valuable, if the subject was of someone else. As for the Sistine Chapel thing, that does make sense.