I was thinking the same thing. From my knowledge, PayPal followed some what of a lean approach. Their initial product was about sending money between palm devi

I was thinking the same thing. From my knowledge, PayPal followed some what of a lean approach. Their initial product was about sending money between palm devices. When they tested it and figured out that no one would use it, they just pivoted to online money transaction, which more people found useful. That's when they started to scale. Now that sounds pretty lean to me.