[Someone]

”So Uber/Lyft are perfectly viable and profitable businesses, at least in theory.”

AFAICT, Horan doesn’t dispute that there is business there; he disputes that it is worth their valuation. If, say, they can make a hundred million dollars of profit a year, long term, that is a viable and profitable business, but not one that’s worth tens of billions of dollars.

And vehicle ownership? I think it is extremely hard to predict what will happen. Many people currently see their car as an extension of their home. If (possibly a big if) self-driving cars aren’t a lot more expensive, they may not want to give that up. Where else would people keep their sweets to eat during their commute, spare jacket, running shoes, tennis rackets, golf clubs, kids toys (let alone kids seats)?

There also may be extra stuff people may want to keep in _their_ self-driving car, for example a computer gaming system, a yoga mat or fitness machine (once self driving cars are safe enough, compulsory seat belts laws can go away)