Of the two sources of superlinear returns here I find step functions the easier one to steer my life happily by. Graduating college is a step function: You go from 0 sheepskin effect to 1 sheepskin effect, and all future employment barriers are made significantly easier to scale. SOC2 compliance is a step that lets you sell 1/10 the feature set to 10 times the enterprises at 100 times the subscription price. An exponential return is the fundamental driver, for sure, but the way you get there is often by hurtling over a sequence of steps.
One huge example for me: Marriage. I went from a long time with 0 wives, and now I have 1 and everything is much much better. What a step! If this is what PG means by a superlinear return sign me up!