alt Hacker NewsThe point of doing something non-scalable is that you can enter and exit the market fairly easily. You don't need to be a tailor your whole life. You can make a living as a barber, electrician, teacher, or nurse.
I'm not saying it's easy! It's hard as hell. It sucks when your job gets automated. I'm just saying that aiming for something non-scalable means you're not always tilting at windmills, and the game can't be rigged against you.
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All of those professions you've listed require about half a decade of dedicated training to be legally allowed to practice. For example an electrician takes like 7 years to become qualified, that's a full time apprenticeship, and it pays badly in the meantime.
A fact endlessly annoying to electrical engineers who legally can design their houses power system but not work on it.
(I mean I think a barber is quicker, but one of that list is also not like the others)
Switching jobs from electrician to teacher to nurse will take around 3 to 5 years of education or apprenticeship in most countries. It also requires new licenses or certificates if you ever move country.