Probably efficiencies of scale. And those tools aren't there to protect small, inefficient businesses, their existence doesn't make small, inefficient business

Probably efficiencies of scale. And those tools aren't there to protect small, inefficient businesses, their existence doesn't make small, inefficient businesses more successful. Quite the opposite: regulation disproportionately impacts small businesses in a negative way. So you could even argue that they are "losing" because of those tools.