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It can be an economic issue as well.

Spaceship trips existed for 50 years. But it costs $10,000,000 per person. Not enough tourist potential to offset the costs.

Now with many companies and countries entering, it's down to $200,000 per person. And probably going down more. Now, there's enough tourist potential to offset the costs and derive profit.

Other examples; flying cars and jetpacks.



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