The industrial revolution did not create horrid working conditions, did not create rapacious owners, nor did it create child labor. It simply brought those same practices from the country to the newly created cities.
Unions did NOT improve anything. It was the increase in wealth, from greater productivity, which allowed a politically stronger middle class to form, allowed greater leisure and choice, more opportunities for education, and allowed the creation of the concept of “childhood” (invented by the Victorians)
Capitalism works great when there is fairness in the marketplace. A level playing field where the law is impartial and everybody has the opportunity to succeed or fail.
We are not talking about a time period where that concept even existed.
In many cases, there was de facto slavery of workers, sometimes for generations. Being paid with company scrip, being forced to work hours without pay, being forced to live on company ground with armed company guards to enforce company rules. Sound like a situation that you can just walk away from?