I feel that, once you have reduced the consumables of something to energy, that doesn't tend to make it energy limited. Instead, it becomes capital limited. You

I feel that, once you have reduced the consumables of something to energy, that doesn't tend to make it energy limited. Instead, it becomes capital limited. You need to be able to pay for the upfront capital costs of installing the thing. Add to that the fact that, once these developments have happened, they tend to improve a lot, quickly. That means anything you build will, soon, be outdated and stop producing as much yield. Hence, you don't want to invest too much.