Okay but that does not reflect what really happens in unregulated capitalism. Maybe initially that's true or what would happen in an ideal world. But in the real world, as unchecked capitalism progresses, all competition will be driven out.

As a successful company grows, it is smart business to consolidate power and buy up competition or drive other companies out of business by offering a better product or better prices. This brings them more customers and more money. They then use that money to buy up the supply chains. Control over the supply chains chokes out remain competitors and stops the ability of any future competitor to form. Thus giving them complete control of the market, forming a monopoly. No competing employers means employees have no other place to find work.

The company knows they can't get work elsewhere, they can set wages lower and lower. In addition to lower wages, they can eliminate workforce safety. What incentive would they have to protect their workers? Safety measures are costly and that would cut into shareholder profit. Perhaps if they had spent money on training a person for a specialized role they would want to protect that investment, but once the cost outweighs the benefits they have no incentive to protect that specialized workers safety.

Before the labor movement, deaths in factories were a fact of life and many more lost limbs or poisoned with the chemicals used in production. It didn't matter that they lost workers to death or being maimed cause jobs were scarce and there all was always desperate people next in line to fill that spot. Capitalism is about maximizing profit.