Wright’s law is the only way to reduce costs. It’s a generalization of Moore’s law. The more of anything you build the cheaper it gets. Most products get 10% - 20% cheaper every time total production volume doubles. The most obvious example right now is rockets - launch costs are going down exponentially because we (SpaceX mostly) are doing so much of it we are finally getting economies of scale. SMRs will too, but only if they become popular. It’s a little bit of chicken and egg, but the economics are clear. If lots of people start using SMRs they WILL get cheap. And it’s a form factor where it’s plausible lots of people will.