How much do they worry about the existence of stock photo companies already? Realism seems to be its key strength, and I think it will continue to fail on novel aesthetic points, but will probably push people to be more adventurous with styles.
I was wondering about this same thing this morning from the perspective of NFT creators.
If I was a professional designer, I'd see something like DALL-E as an awesome tool to help come up with concepts upfront in discovery sessions etc.