The law works because most people won't break it, most disputes don't even end up in anyone getting sued, and most lawsuits end up in settlements before too much court time was spent. Break any of those things, and systems crack. Break multiple, and it all collapses.

If the cost of what a lawyer does today drops to pennies, the system probably needs robo-judges, and/or massive penalties for taking something in front of a human judge when the facts sufficiently completely one sided, as making them pay the winning party's legal fees will become insufficient deterrence.