The trucking company probably also doesn't want to have to deal with the extra mess of you trying to give chase and get shot for the trouble, or trying to shoot them, and accidentally hitting something, or someone unrelated.
Losing the cargo to robbery is bad, but is preferable to losing a driver. Insurance will cover theft, anyway.
Same that they would if a large boulder the size of a small boulder fell off some place and damaged the trailer.
That's the standard practice for speeches, where you just power through any mistakes you make while speaking and keep going.
Stopping, or going back to correct the mistake would interrupt the speech more than the mistake did.