Not an argument, but I take it. Being the grandson probably I know more about ponzis than you. In a ponzi, there is a constant need for new incoming money, otherwise the system collapses. Now I will teach you how to make an argument: 1. In cryptos, there is a constant need for new capital inflow otherwise the miners' constant selling of the new coins causes a price drop because of more supply than demand. 2. For Tesla, the company, selling cars below cost causes a constant capital loss and there is a never ending need for capital raise otherwise they go bankrupt. Did these arguments make my analogy clear now? You are welcome...
Remember when Auroracoin had a billion dollar market cap and was trading above $70 each and now its only worth 4 cents? Yeah, that's going to be bitcoin one day.