Your grandma had plenty of opportunities in the post war eras. During her time there was always a need for human workers. While I dont think AI can actually replace anyone reliably, I still can see how executives buy into this promise and try it. This is a unique situation humanity never was confronted with. Even the industrialization required a lot of human work. If all white collar jobs went away there is a huge imbalance in available workers vs available work. Simply adapting to this isn't a thing given that monopolies killed competition and its not feasible for your everyday Joe to break into markets anymore. Kudos to your grandma for making it this long, simply not a comparable situation however.