Yah it’s a great question.

My thought process is that the primary scaling method needs to be similar to bitcoin, decentralized infrastructure. Particularly home gardening techniques that can supply a family and provide extra. Canning techniques to provide duration.

New technologies that can help with this are things like LED lighting, hydroponic methods, distributed electrical generation like solar panels or wind turbines, battery technologies.

An example, in 3-4 weeks I can grow from seed 18-24 heads of lettuce in a 4’x4’x6’ high space, using LED lighting and a circular water system with minimal added nutrients.

This can be automated using simple raspberry pi type computers, and other electrically powered pumps and sensors.

Mushroom cultivation is another good source where production can be localized to the household level, and automated, with quick turnaround between crops. Chickens are another example of localized food sources.

When combined with more traditional permaculture methods, a localized economy can develop where individuals produce beyond their consumption rate and cooperate with others to exchange goods to fill out their nutritional needs.

Basic description here but gives you the idea if my thoughts and direction for my own future.