Complex, high accuracy, real-time challenges are successfully resolved by applying the right mix of 3D machine vision technologies.

The fact that 2D machine vision systems have been deployed for a few decades now is a testament to their worth. They do a perfectly good job in a wide range of applications, so there’s nothing wrong with them. 

There are though many production line scenarios where the practical limitations of 2D means they simply can’t be used and emerging 3D machine vision systems can.

https://info.zivid.com/blog/why-3d-machine-vision-whats-wrong-with-2d-machine-vision