What a moment. The takeover of buy now, pay later pioneer Afterpay by US payments giant Square is unquestionably a triumph for Afterpay founders Anthony Eisen and Nick Molnar, whose uncanny ability to make the right move at exactly the right time has allowed them to go from zero to $39 billion in just six years.

But this deal is bigger than Eisen and Molnar, who will take stakes in Square worth about $2.7 billion from the deal.