We can stop private companies from selling that data if we wanted to. Once the federal government has direct control of our financial transactions, how do we limit what they can do with that power?
The point of keeping the government out of the banking business would be to keep the door cracked for the chance to improve it later. That door slams shut once the federal government has the insights into every transaction, and more importantly the ability to deny ones they don't want us to do. We also Wil have much less control over the creation of a social credit score, theoretically the government would have everything it needs to make that happen with control over our transactions.
The point of keeping the government out of the banking business would be to keep the door cracked for the chance to improve it later. That door slams shut once the federal government has the insights into every transaction, and more importantly the ability to deny ones they don't want us to do. We also Wil have much less control over the creation of a social credit score, theoretically the government would have everything it needs to make that happen with control over our transactions.