If I took 2 weeks off from work I could build this prototype quite easily. We're in an interesting period where the space of possibilities is so large it just takes a while for the "market" to exhaust it.
My use of ChatGPT for this purpose is so far mostly limited to a sanity check, e.g. "Do these notes cover the major points of this topic?" Usually it'll spit back out "Yep looks good" or some major missed point, like The Pacific Railway Act of 1862 for a topic on the Civil War's economic complexity.
I'll also use it to reformat content, "Convert these questions and answers into Anki format."