A bit less than 25 years ago, I was IT director at a small tech company. The MD approached me and asked about how we stop people looking at pr0n on the company's internet.

I looked into it, and worked out how much we'd need to restrict and monitor everyone's internet activity. And then realised that this wasn't a tech problem at all. If someone is looking at pr0n instead of doing their job, then that's a line management problem. Exactly the same as if they were reading a copy of Playboy at their desk.

Preventing child abuse is, similarly, not a tech problem. It's a human problem. The internet did not cause this problem, and if we monitor every single byte sent over a wire, the problem will still remain.