Maybe I could have phrased it better. I was making a wider point ("people in general...") than Uber here. Uber's externalities are mostly related to insurance, worker abuse and damage to the fabric of society (what example do they give by being able to get away with blatant disregard for law?). Some of that should (and probably eventually will) be handled by union.
But my point is - willingness of some people to pay for something in no way makes something worth existing. People do pay for kidnapping and murder.
Or more day-to-day, mundane examples - why do we have spam, both electronic and the shitton of leaflets that go to trash every day in every city? Because someone paid for it. The Internet as a useful resource of knowledge is in constant battle with people paying for SEO. I could write hundreds of such everyday examples.
The point is, people are optimizing extremely locally when it comes to their decisions. Sometimes because they simply don't care, often because they don't know better. But just because they're willing to pay for something doesn't make it good or validate its existence.
But my point is - willingness of some people to pay for something in no way makes something worth existing. People do pay for kidnapping and murder.
Or more day-to-day, mundane examples - why do we have spam, both electronic and the shitton of leaflets that go to trash every day in every city? Because someone paid for it. The Internet as a useful resource of knowledge is in constant battle with people paying for SEO. I could write hundreds of such everyday examples.
The point is, people are optimizing extremely locally when it comes to their decisions. Sometimes because they simply don't care, often because they don't know better. But just because they're willing to pay for something doesn't make it good or validate its existence.