> iOS, ASP.NET Core, JSP and JSF (Java based frameworks), Ruby on Rails, and Django (Python) are all based on MVC.

Don't all of those have two-way data binding?

> Why is it that MVC works for all these other frameworks, but doesn't for React?

I think the point is that Facebook found it doesn't actually work well, at least for their use cases. They found a recurring set of bugs caused by two-way data flow, and built a framework to alleviate it.