Lets say that 10,000 years from now we've figured out how to harness massive energy, from stars for example, and have powerful software and machines which do all unwanted tasks. We've figured out how to rearrange molecules to convert low demand substances into whichever rare ones we need, so control over specific resources matters little. We easily find, travel to, and colonize planets around the galaxy. Lets imagine science and technology have advanced so far that we have massive surpluses of all things: energy, water, food, land, advanced machine labor, and even time (medical advances allowing us to live as long as we like). We have more than enough of everything.
I suspect whatever the economy is like at this point, it's based around arts & entertainment:
- Virtual Reality
However I'm not sure what such an economy would look like, how it would work. I assume the economy would always have a place in society, even in a Utopia. How might an economy work, how might wealth be measured, transferred, accumulated in such a society?
For example: We still need law enforcement to protect people and resource delivery / manufacture systems from criminals, we must somehow pay Judges and Police. We must somehow pay artists and musicians, as their crafts are still of value.