If I were to set up my own factory, I would want to focus on manual labor these days.
Because there would likely be a lot of people. With more people, it's better to have somewhere to be. It's lively, and no one would notice if you took paid leave.
With large machinery, you need fewer people...it still runs smoothly even with a few. That makes it hard to ask for time off.
So I'd have eight or ten large pots, and make the same thing in all the pots, with spatulas in hand to make the food by hand.
Assuming that a large machine costs 10 billion yen, and each person earns a cumulative total of 200 million yen by the time they retire, if you don't buy a 10 billion yen machine, you can hire 50 people. For 40 years. Will this large machine last for 40 years? ...So, if the production volume can be achieved by 50 people, it doesn't need to be a large machine. That's why I have that kind of chance, and that's why I want to make it with small machines and handmade products. If you want to make a factory like that, there seems to be a good chance of making it.
Or we could have 50 sewing machines and have everyone work together to make clothes. It looks more lively than using large machines.
We'd improve the break room, etc., because we have a large number of people.
Note:
You shouldn't say anything about the past.
Because people in the past were challenging themselves with things they had never experienced before. So you shouldn't say anything about their results, because they challenged themselves with things they didn't know the answer to.
The solution to the situation, to what has happened in the past, is to sell the heavy machinery to developing countries, with a warning to them of the problems ahead that you know from your own experience. I would recommend that you do that once the plan is complete.