Without an economy, nothing would EVER get done - just look at how every communist nation in human history has collapsed, because there was no reason to do anything and a tendency towards stagnation because there was no reason to improve or compete. I don't think you understand the economics - people will never work for nothing, and that includes operating whatever source is used. They will instead work a means that actually provides for them, which goes to ones that are viable without external support - that external support comes from taxes, so in the end, is taken right back from the people who it is paid out to.
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