> I'm not sure that replacing Visa and MasterCard is really that big of a sovereignty move considering the pervasive dominance American mobile OS tech has

So 'having an apple or Google phone' is equivalent to you to 'have every individual payment processed by visa/mastercard'?

Processing a payment means knowing who sent what to whom. I'm sure you don't care if I know what phone you have. But can I see every bank transaction you make? Every single purchase? No biggie, right?

Aside from the fact that this is maybe the next dependency to drop.