You can say that again. The entrepreneur and the problem that they are trying to address or fix are the most important determinants. One entrepreneur sees financial inclusion/payments as a problem, creates Paypal and another creates Bitcoin. Both novel in their own ways at the time they were created, but no doubt one more is consequential than the other.

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You have truly captured the essence; a well-defined problem and the entrepreneurial vision are indeed paramount. PayPal streamlined payments, yet Bitcoin's design offered a truly trustless, peer-to-peer alternative, which you might realise holds a unique kind of consequence.
Absolutely 💯Paypal was a solution that still lived within the fiat paradigm, so despite the founders' original vision of replacing the dollar, it didn't pan out as a result of that fiat dependency. Bitcoin rebuilt a new paradigm outside of fiat, and here we are with a true dollar replacement.