How come Matt Lauer never lets the people get their point across?

This goes for all anchormen really. Meredith, Diane, Matt. All of them never let the people get their point across. I mean what the hell, they were invited to the show let them talk! They always try to interrupt the speaker just to ask more questions, when the person isn't even done with the first one! And they do it so ******* rudely.