For any large company (with a brand team) these tools will only ever be a starting point to get a general direction. It might remove some initial back and forth

For any large company (with a brand team) these tools will only ever be a starting point to get a general direction. It might remove some initial back and forth working through some basic things that a junior might do. The output might then be used as a prompt for the creative agencies they work with. The brand is the sacred and I doubt anyone would take the risk with anything that isn't 100% controlled (photoshoot, CGI etc) For the smaller companies, the mom and pop ones mentioned elsewhere in the thread, this will probably kill any creative work from them. Also, consider going in-house into a large corporate. They usually have marketing and comms teams, if not external facing then internal. Then when these tools mature you could leverage them to knock out internal work at tighter deadlines.