Child labor is mostly a separate issue then regulation of business. Otherwise, you got nothing.
I was proving to you that child labor was a thing until laws were written specifically to strike it down. The horrific conditions of the slaughter houses and packing plants had to be fought with the same kind of legislation, which went hand in hand with the banning of child labor and the worker's rights movement. That's the kind of shit a total lack of regulation allowed. That's what it will allow again if given the chance. We need basic standards and regulations. The only valid question is how much.