Obviously the private jet industry optimizes more for comfort and other things before efficiency today. The commercial aviation industry does optimize for effi

Obviously the private jet industry optimizes more for comfort and other things before efficiency today. The commercial aviation industry does optimize for efficiency but only with larger planes since human costs (and airport costs) are mostly fixed per plane. I’m simply saying that perhaps the future could have smaller, more efficient planes and more automation that removes fixed costs. (The design in the article is such a plane, in theory.) You seem to be conflating big/small with commercial/private and taking a firm anti-private position.