A couple of problems with that: - Filing a frivolous lawsuit makes the plaintiff liable for the defendant's legal expenses. - Repeatedly filing frivolous laws

A couple of problems with that: - Filing a frivolous lawsuit makes the plaintiff liable for the defendant's legal expenses. - Repeatedly filing frivolous lawsuits can get you labeled as a vexatious litigant, and if labeled as such you need a judge's permission to file even a valid lawsuit. - Lawyers knowingly participating in frivolous lawsuits or vexatious litigation can be disbarred. For these reasons, I don't think you will see corporations filing a lot of meritless nuisance lawsuits.