But that curve will start going downwards as soon as machines can fully replace people and most countries start using said machines. It's kind of like slavery

But that curve will start going downwards as soon as machines can fully replace people and most countries start using said machines. It's kind of like slavery - you could have 1000 working citizens do the work of 50,000 people (because slaves were basically "free labor", like a robotic arm is nowadays)... Except slavery went away (thankfully), and automation will not (hopefully)...