tl;dr: Paul Graham argues that becoming a billionaire through startups doesn't require exploitation, just exponential growth: a startup growing 15% monthly will be worth ~4,384x more in five years, making founders billionaires without cheating. The key is building something users love enough to tell their friends about, which is best achieved by young founders making things they and their friends want, often via side projects rather than deliberate idea hunting. The two variables that matter are growth rate (driven by user love) and duration (driven by market size)—neither of which cheating can meaningfully affect.