Earlier quoted context omitted.
Because the gains from increased productivity have been reaped by executives, not workers. You keep working the same hours to make your bosses more money, when you could be working less instead. This income gap has been widening since the 1970s[1,2]. [1]: https://www.cbpp.org/research/poverty-and-inequality/a-guide... [2]: https://www.epi.org/publication/ceo-compensation-2018/
This cannot be true. Imagine your job is producing chairs. You make 1 chair per day. Now you get a machine that improves your productivity and you can make 4 chairs per day, but your pay doesn't increase, instead the executives pocket all of it! But what about the 3 extra chairs? Somebody somewhere gets chairs that wouldn't have got them if you had been producing 1 chair per day. Wealth is about stuff , not money. If…
I hope you noticed that this somebody is someone else and not you. It could be another executive from another company.
The thing is, people don't care about stuff, because stuff is cheap. They need money to pay for housing and they need only the money, because if people stop consuming and spend more money on housing, the housing gets more expensive even for those who would have otherwise spent their money on consumption. Those people also need more money, not stuff, to spend on housing.
When things get more expensive for no reason, the economy must grow regardless of whether people want to consume more. Most wealth is about the allocation of already existing stuff and transforming it into something convenient. Humans didn't create the oil or iron ore in the soil. They just dug it out. Stuff is never produced, only transformed, so economics will always be about fighting for getting that initial endowment.