My prediction is that the next differentiator will be response time.

First we got transparent UIs, now everyone has them. Then we got custom icons, then Font Awesome commoditized them. Then flat UI until everyone copied it. Then those weird hand-painted Lottie illustrations, and now thanks to Gen-AI everyone has them. (Then Apple launched their 2nd gen transparent UI.)

But the one thing that neither caffeinated undergrads nor LLMs can pull off is making software efficient. That's why software that responds quickly to user input will feel magical and stand out in a sea of slow and bloated AI slop.