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Absolutely. DAM construction is essentially sequential. You can't build the top without completing the bottom.

Manufacturing hot water tanks is trivial and highly parallelized.

Thousands of manufacturers for parts, all of whom can contribute to the demand.

It looks trivial if you've never done it. If you actually try you'll see that manufacturing a safe, quality product at scale while turning a profit is extremely difficult.

Thankfully we have a large workforce with the experience to innovate in the manufacturing realm... oh wait.

We used to be world leaders and we collectively decided it was better for a handful of people to be wealthy instead. Excess wealth (>1 billion dollars is a nice start) should be used to improve society in ways like these and in many other ways. A society is great when it solves problems, not when people are wealthy.

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