[crimsonalucard]

Wealth IS a zero sum.

Take a very abstract product... something we assume to be unlimited in nature and examine it.... let's say a poem. A poet produces poems and sells a book of poems. We assume that the poet has created wealth out of thin air and that wealth is therefore not a zero sum game.

But in order to produce the poem, the poet needs energy. Energy for sustenance, comes to all humans in the form of food. Food is either meat or vegetables. Meat comes from animals that usually eat vegetables. Vegetables gain their energy from the sun. The wealth (poems included) that humans produce is limited by the energy we extract from the sun and material we can extract from the earth. All abstraction comes from physical primitives which are limited by physical laws, thus all abstract products such as poems, literature and art are all limited and thus part of a zero sum game.

Actually if you follow the energy chain of everything to the root, all things end at the sun (nuclear power is an exception). You could say that the sun is basically an unlimited source of energy... but commerce is directly affected by the rate in which we can extract energy from the sun. Since it is physically impossible to extract energy from the sun at an unlimited rate, the rate must therefore be limited and all commerce, products and abstract ideas that arise from usage of this energy must also be, in turn, limited.