

I don’t know. I might say “Matrix” and run a private server? But that’s a bunch of IT work. It’s attractive to use a SaaS because you don’t have to do any long-term planning or hiring; just pay Slack a crazy amount of money and it all works.
Corps also like a commercial paid service because they get a contract with an SLA (even if it’s rare to actually get anything from these SLAs).
Torture isn’t useful as an intelligence-gathering tool, but that’s not what it’s being used for here. Torture works quite well for manufacturing confessions to use as propaganda to justify further killing/torture/other crimes.