Honest question: If it works on a small scale couldn't we just build lots of them all in one location? We already have the distribution network.
That would give you economies of scale in maintenance on production, but you'd still sit with the maintenance of the distribution network, which you could perhaps eliminate if you rather sell individual units. I can also imagine that companies would not mind shifting the burden of maintenance cost onto the individual, even if it is more expensive overall. In fact maybe _because_ it's more expensive overall.