They would have built something over years and one morning entire thing is taken offline due to a fake DMCA notice. Then they have to issue a counter notice with all its legal implications and it also exposes all your private information including full address, name and phone number(in a wrong country, you become target of thieves as well). Then it takes almost a month before content is restored.
How can an individual fight this? How can you make companies misusing DMCA pay for it?