Airbus, if you would like an alternative comparison, kicked off development of the A350 in 2005 and the maiden flight was in 2013, eight years later. Boom hasn

Airbus, if you would like an alternative comparison, kicked off development of the A350 in 2005 and the maiden flight was in 2013, eight years later. Boom hasn't even finished the scale prototype they've been promising for a while, much less started development on an actual full size plane. If they ever fly the plane, it will be more than a decade from now.