My guess is wifi and entertainment are excluded because United doesn't build those. Depending on the aircraft they're provided by Panasonic, LiveTV, etc. in the

My guess is wifi and entertainment are excluded because United doesn't build those. Depending on the aircraft they're provided by Panasonic, LiveTV, etc. in the case of LiveTV (United's vendor for DirecTV) it's even seller-financed. United probably isn't interested in paying for someone else's bugs.