I would again submit that the situation is not as simple as you're saying.
I'd be the first to agree that it's not that simple, and that the legal system in many places is not a very effective tool for providing justice in "low value" cases. But even then, there may be consumer representative bodies or government regulators that maintain dedicated funds to pursue bad actors in such situations, possibly through other means. In places like the US, you also have the possibility of class actions if a large organisation is taking advantage of the imbalance to harm lots of customers a little bit each.
I'd be the first to agree that it's not that simple, and that the legal system in many places is not a very effective tool for providing justice in "low value" cases. But even then, there may be consumer representative bodies or government regulators that maintain dedicated funds to pursue bad actors in such situations, possibly through other means. In places like the US, you also have the possibility of class actions if a large organisation is taking advantage of the imbalance to harm lots of customers a little bit each.