arg

They can do the same thing, but I don't think any commercial airplanes use dishes for broadband yet. Inflight broadband outside the US typically use phased array antennas to communicate by satellite. They cost around $500,000 for a 5 Mbps downlink and slow uplink which doesn't work at some altitudes. Adding dishes to planes can be done, but they take space and are heavy, which costs airlines money every flight. In the US, I'm not aware of commercial aircraft offering broadband internet, but the FCC & FAA seem to be favoring the use of air-to-ground broadband rather than air-to-satellite. Takes more ground-based infrastructure, obviously, but less in the airplanes and no need for satellites.