It can replace nothing. It can make the job of eg. developers easier. And on a small, private scale ML can replace writers and stock photo libraries, if they have support for pictures. However, on a larger scale, both would have massive problems of quality, diversity and copyright. You can’t use the output of a ML algorithm for things you earn anything with if there are active cases exploring if the copyright belongs to the ML itself, the producers of the training data, who probably didn’t give anyone consent, no one, or actually you.