We didn’t abolish slavery… we just replaced it with wage slavery. Sure, the workers are free to leave - and try to survive with no other job opportunities and no money. In fact, for the employers, this is actually preferable to real slavery, because there are lower upfront costs for your slaves, they don’t try to run away or rebel, you don’t have to pay for their healthcare or long term care, and in many places government tax dollars will subsidize their living expenses. Employers have it WAY better with wage slaves than real slaves.
Child labour is still alive and well in many countries, and even there the ball is rolling on rolling THAT back in the US at least.
I admire your positivity, but I’ll believe it when I see it.