It didn't happen over the course of centuries. My grandma was a small land holder and grew her own crops until she passed away. None of her children or grandchildren have any relationship to farming.
It happened over course of generations, while a huge lot of jobs were created in the cities and/or in the industrial centers (also mostly in cities).
In the postindustrial stage, a lot of jobs were created in the service areas.
Nothing like that is happening now at all. No jobs are created in any field whatsoever; they are only being destroyed.
Which doesn’t play well with “savings for consumers”, because these consumers will be unemployed.