I worked for a healthcare / health insurance place some time ago. They monitored absolutely everything. They had everything. We ran appliances to Man in the Middle HTTPS sites, We had sneaky SMTP servers that would detect credit card numbers or social security numbers block the emails from going out and send them to a secure web portal. The recipient would just get a message that there’s a secure message waiting for them and they have to go login and retrieve it.

These days if you run slack Enterprise, The workspace managers can get access to even the most private of chats. I’m not sure about teams I’ve managed to stay away from it. I believe you could do this in Gchat but it would probably require a lot of legwork maybe somebody makes an application for it already I don’t know.

I didn’t mean to say that no companies would go for it has anybody even just running small business versions of software don’t have access to that kind of thing, The places that have any intent on decent operational security are going to want their tentacles into all the things.