You have live pictures from the finish because they have a TV truck with a satellite dish there, and cameras are connected to the truck via cable.
With motos, its different. Motos relay video feed to helis, and helis relay the feed to a plane which relays the feed to a satellite. Break the chain at any link, and there are is no live video.
What will happen today, is that motos will record the video to some kind of physical media, and once that media gets to the TV truck, and video from all motos get edited together you will have highlights. Probably an hour or so after the race ends.
You will have last 350 meters live though, because its covered by stationary cameras (same ones that are interviewing the fans). I hope i explained it right.