Agree it's not accidental, but also there's so much hassle on a societal level to pay with Bitcoin. Chicken and egg problems are not easily solved.

Fiat was effective precisely because it was by decree (i.e fiat) - do this or else.

Having it come up organically will take way, way longer. And in cases where you don't want to use fiat, the uneducated people there are happy to simply cash USD.