From an in-flight Wi-Fi reality check – Gogo is currently used by 4% of passengers, when the service is available
The bigger problem for Gogo and other in-flight Wi-Fi providers is that most people aren't willing to pay for what is usually a slow, unreliable internet connection unless they absolutely must. There's plenty of work that even a blogger can do without an internet connection, and a plane is often the best place to do that sort of work. And if more people did start using the in-flight service, that would make it even slower. But perhaps I'm being too pessimistic about Gogo's prospects. Mr Frommer has a lot more points to consider; his piece is definitely worth the click-through.