They could trivially allow the network to be used for anything, but also have a rule about behavior in the cabin to not disturb any other passengers. They’d be

They could trivially allow the network to be used for anything, but also have a rule about behavior in the cabin to not disturb any other passengers. They’d be imposing restrictions only on physical actions you take during the term of the contract between the two of you, and while you are in the location that contract specifies. The ticket is the contract. And they can say, “Don’t talk with your voice to anyone not on the plane.” Or however they’d like to word it. Personally, I’d hate to be next to someone on a call on a plane, and I’d hate to be on a call while next to someone on a plane. This is personal preference. It is no better or worse than your personal preference to sit next to someone while they take a call or to take a call while sitting next to someone. Perhaps we’ll see an evolution of plane seating to allow for quiet zones, similar to how some trains have quiet cars.