Emirates' SVP of connectivity just said the entire legacy inflight wifi industry "didn't really understand the core technologies" needed to deliver working internet on a plane. That's a $1.6 billion industry. Gogo, Viasat, Panasonic Avionics, Intelsat, Thales. All selling airlines connectivity for two decades. And one of the world's most premium airlines is now saying it never actually worked. The physics explain why. Legacy providers used geostationary satellites orbiting at 22,000 miles.…