How many people has the US military killed over the last 10 years? How many US military personnel have been killed? The ratio is on the order of 100:1. (I'm not making any kind of moral judgement about the US military here, just pointing out it's raw effectiveness at a core competency, which is killing without being killed.)
People are not a great bet in the present technological era.
People matter.
So your argument is preaching to the choir not to that which you need to convert which is technological progress.
You are simply confusing what humans need with what humans can expect. Technology is a competitor to humans not just a tool.
My train of thought is exactly sustainable in that it expects technology to take over most jobs instead of ignoring this.
If people start burning uber cars then uber cars will start defend themselves. Again technology is competitor way before we take it into Superintelligence land.
If more people was on my "train" we would be dealing with the problem by introducing something like Unconditional Income.
Technology is like a tsunami, you can try and stop it or try and learn to surf on top of it for as long as possible. I prefer the latter rather than being crushed by the former.
People make laws. People make technology. If we continue down a path of making technology only serve the accumulation of capital, people will course correct the direction of technology.
Society is made up of humans. The economy in your case is the tail wagging the dog.
The problem with your train of thought is that it isn't sustainable. When people get fed up and start burning ubers, the folks betting against people will be the ones finding their backs on he wall.