Pretty sure the data about individual goods is up for sale.

Didn't Google start buying this kind of data to match up online purchase intent with real-world purchases?

If you apply for a loan, especially a mortgage, the lender could ask to see your outgoing cash flow statements. Which wouldn’t get into receipt-level detail, but could still potentially allow the lender to discriminate against you.

A person with habitual transactions at a casino or liquor store could be perceived as high risk and the lender could jack up the interest rate for that person. I have no clue if lenders _actually_ do this, but they could since they do ask for your outgoing transactions.

They could, but for the vast majority of people they won't. Credit scores exist so that they don't have to.

Credit card company rolls up your behavior into a number, and passes that to a credit agency like Experian, and they pop a number out to anyone who asks.

No one is asking for outgoing transactions unless you're trying to buy a business or are getting a non-standard loan for something

The vast majority of people don't have to pass intensive government background checks or face potential rejection during a political vetting process. (And I'm talking about in the United States, where questions raised about personal peccadillos during this process wouldn't necessarily result in the sort of watchlisting they would in most nonwestern countries).

The fear of having oneself audited is the main reason more people don't run for office.

Yes, some narcissistic maniacs have managed to slip through by portraying themselves as victims of witch hunts, but the average married person will not run for office if it means their spouse will find out they went to a strip club.

Everyone is susceptible to blackmail. The digital trail of expenditures is the key to letting the people with access to that data remain in power.

CC doesn’t, the grocery chain does. And they’d love to make money on it.