You've provided very little support for your position. To be fair, I don't think you are claiming that the idea of using batteries in such a way doesn't make se

You've provided very little support for your position. To be fair, I don't think you are claiming that the idea of using batteries in such a way doesn't make sense as we already know that there are successful deployments of batteries doing exactly this (I mean, you could argue that those deployments aren't actually successful and that they aren't properly taking into account the replacement costs of their batteries, but I don't think there's evidence of that). So then the argument comes down to, why would a power supplier pay individual owners of relatively small batteries to do this when they could just deploy batteries at scale. That then is the more interesting consideration and I don't think it's actually clear that the economics don't work out. Private batteries have some benefits to power companies, for example the infrastructure to support them is almost free (as it's otherwise already required), there's no long-term risk of building out too much (i mean, there is, but the power company doesn't have that risk), etc. All in, it could be that the power company is better served by building out batteries themselves, but that their own battery storage ends up always under-provisioned and that it is economically beneficial to everyone that they then use private distributed battery storage to shore that up.