Assuming: In an ideal enviroment, the only important person, is the person living that dream.
So if dreamers required for their ideal world something to exist, it would, but it would be dependent on the needs, not on the resources. Every job would be optional.
There would be no adjustment of needs to the availible resources.
The last limiting factor is the brain and its imagination, which is limited and doesn't require infinite amounts of energy to satisfy, unless there is a need to expand the brain so that it can do exactly that, influence greater and greater amounts of space and matter.