Until Midjourney finds a way to source copyrighted reference images that are used to mend the final images, no company is willing to use it for their projects.
Even though we have a Midjourney account at my marketing agency for us to use, we're not allowed to use it for any client work because we would get dropped immediately if any of our clients get sued for their using copyrighted material. Companies take that shyt very serious.
Until Midjourney gets the legal aspects of their generated art, no company is going to touch it with a ten foot pole.
Right now we only use Midjourney for concepting ideas, and most companies that have something to lose are probably doing the same.