Many years ago I was sitting at a red light on a secondary road, where the primary cross road was idle. It seemed like you could solve this using a computer vision camera system that watched the primary road and when it was idle, would expedite the secondary road's green light.
This was long before computer vision was mature enough to do anything like that and I found out that instead, there are magnetic systems that can detect cars passing over - trivial hardware and software - and I concluded that my approach was just far too complicated and expensive.
Similarly, when I look at computers, I typically want the ML/AI system to operate on a structured data that is codified for computer use. But I guess the world is complicated enough and computers got fast enough that having an AI look at a computer screen and move/click a mouse makes sense.