We've had the technology for locomotives without engineers for years. We don't do that. Why? We just don't trust the machinery. That distrust is getting more prevalent as we enter the age of continuous hacking. We also have the technology for pilotless aircraft. We don't do that either. Driverless trucks? Safety will always require a human in the cab so long as we don't have entire guideways dedicated to driverless machines. This may have the effect of "drivers" logging more hours in a day, but it won't eliminate them.
One thing technology has done is to make human work easier. It used to be that operating a large excavator took considerable operational skill. Now with all the computer assisted technology, anybody can be good at it after a day or so training. Same for backing up a modern semi-truck. The computer assist allows anybody to do that.
I am not as concerned about technology taking jobs as most people. But I am very concerned that we, as human beings, are defaulting toward that. We saturate many communities with drugs, including marijuana, we grow reliant on others feeding us, housing us, and keeping us well. We succumb to crowd think instead of individual critical thinking. Human beings are taking comfort in having no responsibilities. Those who seize the future are those who don't think that way. Those are the people who will own all the machines.
A true story. We have all seen those huge tanks in oil refineries. They have technological apparatus to read the levels of material in the tank. They still test that level with a dip stick--they way it has been done for 150 or more years. If the technology gives a false reading, there can be disaster. Dip sticks are never wrong.