Funny you make this statement without giving examples of timeframes, what this looked like in real terms for real peoples lives living back then, nothing. Just 'between 1880 and 1950 we found new stuff to do'. It's all selling magic and hopium based on nothing.
Real example: 75% of the global workforce were farmers in 1880, most on a subsistence basis. The people who left the farm for the factories during that time period weren't forced to. They chose to, because working in a factory was better than staying on the farm. Just like a generation of rural Chinese people made the same choice more recently.
In fact, there's nothing stopping you from buying a farm and living like its 1880 today.
You can quite literally go out and start living a subsistence farmer lifestyle tomorrow. The average person in 1880 did not have the tools needed to cultivate a large parcel of land, so you'd approximate their lifestyle quite easily with a tiny parcel of arable rural land which is extremely cheap to acquire in most countries.
It's not magic and hopium, its simply automation and increased productivity via leverage. AI is the assembly line of the digital revolution.