Sometimes there are misunderstandings of economics involved, but just as often that kind of resistance stems from factors that "basic economics" glosses over or abstracts away. There's a lot of economic friction involved in shifts like this, and the pain tends to fall on people who have less power to do anything about it -- it's not trivial for a truck driver to go get a new job in a different industry, and our economic system is not very well set-up to encourage that kind of retraining and shifting, nor to support the basic needs of people who don't have much to contribute to "the economy". (All that's vaguely related to the fact that we've been (in the US) working more and more hours collectively despite higher and higher productivity, so that Keynes's prediction of a 15-hour workweek looks crazy even though his estimation of productivity increases was basically on point...)
