P2P apps are enough of an onboarding hassle that they have only gotten popular when there's a powerful incentive, such as the promise of downloading every popul

P2P apps are enough of an onboarding hassle that they have only gotten popular when there's a powerful incentive, such as the promise of downloading every popular song or movie at will or evading the speech laws of a totalitarian state. It's not binary, however. As friction decreases, the number of sufficiently motivating use-cases increases non-linearly and there are multiple thresholds.