That's exactly it. This article is about the wrong half of the problem. I mean, of course, if you have a law enforcement agency with an emphasis on surveillan

That's exactly it. This article is about the wrong half of the problem. I mean, of course, if you have a law enforcement agency with an emphasis on surveillance, they're going to employ open source (in the intelligence sense) methods where practical. Duh. The question is what is on the market, not whether or not the cops are going to buy it if it's there. So... what is on the market? It's not in the article!