Civil suits are the main route regular people have to get compensation when abused by corporations. Or just small companies that get abused by big ones. Citizens almost always lose against companies in the executive or legislative branch - it’s only in the judicial branch where we have any hope of prevailing.
The most aggregious frivolous lawsuits make big news, or at least the ones that look frivolous when portrayed from the right perspective. You hear less about the day-in, day-out work the civil justice system does in keeping people honest and holding society and the economy together. There is a reason companies from around the world sign contracts with one another stating that their disputes will be settled in US courts - because it’s the legal system they trust to make the most consistent and fair choices.