Maybe they don’t have a lot of in-house expertise and they would rather outsource? It will depend on whether they trust OpenAI to do a good job versus some other vendor versus doing it in-house.
I suppose, although the trust is doing a lot of work, not just in "can this work as I want today" but "can this consistently work for the next x years" which is a very different problem to solve for. But we'll have to see the roll out on this.