IE like Crypto AG:
In 2020, it was revealed that the Swiss company, Crypto AG, which provided secure communications services to ~120 governments throughout the 20th century, was secretly ran by the CIA and West German Intelligence. The CIA and later NSA were able to read encrypted communications for many countries such as Saudi Arabia, Iran, Italy, Indonesia, Iraq, Libya, Jordan and South Korea.
Proxies and VPNs seem like the most obvious targets. They mostly prey on people who don’t understand the technical workings thereof (had my mom ask if she needed to get a VPN bc firefox opened on ad for theirs, claiming it enhanced privacy), and serve little benefit to people who are doing the kind of illegal activities that make governments take notice. They serve as a single point of compromise for anyone, and they work worldwide so that all your traffic can be monitored even when you’re on a different ISP/in a different country. It’s like the perfect MITM, and people are even willing to pay to have themselves monitored.
The truth is that at best they benefit people who only don’t want their network-provider watching, but don’t care who else may be. It’s the perfect setup for a 3-letter agency to just sit and monitor everything anyone does, waiting for someone who’s just a little too careless to access illegal content thinking they’re anonymous.