You're right that the relationship between the launch provider and and customer is complex but not particularly collaborative. The GP point is simply that SpaceX doesn't build that complexity into their commercial pricing -- which is awesome. (Their pricing for government customers is much less transparent, precisely because the relationships are MUCH more complex and collaborative).
For Waymo or other LIDAR providers, the relationship with the customer is certainly NOT more inherently complex than the relationship between a launch provider and their customers. They're being opaque about pricing for strategic purposes, which I'll avoid speculating about, since they're also one of my company's customers...