In 2000 I worked for a company that was building a mobile telephony and data product. The partner company asked us to help them implement the lawful intercept function, as is required by law, which we did, however they were asking for 5+% LI traffic when the common practice was 2-ish%. Our hardware was exceptional, we could trivially have done 100% at line rate with zero impact. The engineers all stepped aside, and finally: "Fuck those guys. They get their 2%."

It's one of the better ethical moments I've had in my career of working for _mostly_ very ethical companies (so obviously not any social media or crypto).