[AmericanChopper]

I was going to comment basically this. Everything you could possibly want to know about how LI systems work is documented by the vendors online. It’s really just network interfaces that forward intercepted traffic to aggregators.

The thing about CSPs is their core business is edge routing. A majority of their core assets are going to be internet connected routers, and you’d actually be able to collect more data by owning some of those. The additional information you can get from LI (and the reason you often need a clearance to work on LI systems) is information about who law enforcement are running intercepts on.

Also, LI is just a regulatory cost centre for CSPs. It’s hilarious (or scary, depending on your perspective) how poorly those systems are maintained, and how often the break.