True, but the point is, when there is a surplus of stuff, you can just use it and send it back to a place that stores all that stuff, I think this is the correct mindset for the future. Using something for free and then giving it back so other people can use it, instead of storing useless shit we only use once.
That is contrary to human nature.
Human nature is based on hoarding and scarce resources. Whenever somebody find some rare item, he rather hoards it, instead of letting others to use it.
You are trying to change 1 million years old genetic instincts in a few years of "Venus Project" , well good luck with that. You dont understand how humanity's essence works.
Better luck trying your system with another species because with humans it wont work.
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Plus if you would put "income" tax on plants, in the forms of limiting the CO2 plants get, it's not like the plants will go a tax revolt.
However they will create less oxigen for humans, and we will all suffocate. Thats what government regulation does to the economy too.
"Human nature" is a very vapid concept. Humans adapt to a lot of things, humans can be a lot of things.
The example of a market is always there because "When you inhale air you trade your CO2 to the plants, and the plants give in return O2." is stretched out as hell. Pragmatically, we consider that there is no market there because of the surplus of air and CO2.
Similarly, once machines are able to deliver a surplus of goods and services, the market will get reduced to some niche things like as you said something very rare. Then again I don't know how this all will work in the context of most people not being needed to do any jobs.