Everyone within a country using Bitcoin as their only/main money.
Discussion
I see now, it's easy to imagine. Is that even possible though? I thought lighning couldn't support that. If you build it, they will come. We don't have such adoption as it's not built for that yet. Also, the biggest bagholders scream at poor people to buy and hold, so the two facfions of bitcoin billionaides nedd fo decids between themselvds whether it should be hoarded or further developped to be used as ecash by everyone.