If I was running a physical business and I wrote down each person’s name and credit card number and the exact time and order they placed, that would be pretty invasive and “spying”. If I write down how many units I sold of each item per day, and the volume of transactions by credit card vs cash, it’s anonymized and I don’t think this would generally be considered “spying”, just normal business metrics. How’s the latter much different than anonymized product analytics?