Also to note just because it may work for one or two times if they start to see a possibility of a large impending loss they can allocate resources to fight small claims cases also.
Say another $20m for My Cousin Vinny Attorney at Law used to dealing with such cases, and it's not a company killing expense. That's assuming that all win. You could say that word spreads, "he won $10k so you should file too," but I doubt it.
See, for example, what the Church of Scientology was able to do to the IRS.
Even if the little guy doesn't win, Equifax is going to pay a couple of grand per case. Multiply that by a lot of angry little guys, and Equifax learns an important lesson.