I'm not a fan when schadenfreude indulges in someone failing to make the world a better place.

I think there is a simple reason why AI tutors are not terribly successful.

AI is just not good enough yet, they are only just now capable of performing tasks, getting them to do those tasks involves a degree of careful guidance and the ability to handle frustration calmly and rationally.

Those things require a high motivation to have the task done.

They are not the properties you want in a tutor, a few students have the drive to learn in conditions that are not ideal. They are a small minority.

What you need is a AI that has a deep enough understanding of the ideas behind the metals it teaches and is engaging witty and charismatic enough to get that information across to a student.

When it has those abilities there will be a lot of parents that won't want it to have access to their kids.