Explanation how monetization works to all who provided related comments.
When a video content is not 100% own by the publisher he cannot monetize it, as it is the case with this video.
The owners of the copy-write content may elect to monetize the video and they receive the money.
This is the case of this video that is monetized and makes money for Lucasfilm and others not the publisher.

Train Wars

Episode V
The Death Train

It is a dark time for the Rebellion. Although the Death Star has been destroyed, Imperial troops have driven the Rebel forces from their hidden base and pursued them across the galaxy.

Evading the Imperial Starfleet, a group of freedom fighters led by Alex and Max has established a new secret base on the remote planet of Almax.

The evil lord Darth Vader, obsessed with finding the young Jedi, has dispatched the dreaded Death Train into the far reaches of space....