Re: Conceptually not bad but ...
What units would you use to measure "potential wealth"? You seem to be defining potential wealth as all the energy (include the mass-energy) in the accessible universe. Scientifically interesting but economically irrelevant in making decisions about taxing Amazon and other multinationals today.
Economics is founded on the principle that human activity can create or destroy value. It is the study of human behaviour and how we value the things we use and trade. Value, in that context, is whatever we as humans perceive it to be. If our perceptions favour to many frivolous trinkets over say the environment, food production and health then we risk regressing back to the stone age. How and when we tax companies or individuals affects economic behaviour, total economic wealth and to whom those benefits flow.
Over and out.