Depending on your views, you might also note that American courts are ruinously expensive and many people are denied access to justice because they can't afford to go through the legal process - which a cheaper parallel system can help with.
Or with different political views, you might note that because the powerful elite get to write the contract, the powerful are only subject to arbitration when they want to be. And laws are written by the powerful elite.
Industrial gatekeeping is a real problem. One of the indirect mechanisms is the accumulated complexity of the law and the seeming inability for legislatures to remove outdated and fruitless laws from their books. Unsurprisingly the people most capable of achieving this are not interested in doing it.
Get real.