Company-wide conferences were a ball-ache. The corporate solution didn't mute by default, so with 40000 people in a conf it devolved into a "TURN YOUR MIC OFF" shouting match for the first 10 minutes.
Which one? Webex, Jabber or whatever they use for their 50k€+ videoconferencing systems? I have only had the honor with the first two and, jeez, it's a nightmare...
I've used cgiirc, but it isn't pretty and some people want pretty and client-less.
But as somebody who's got gchat gatewayed to IRC, replacing two things I can use from irssi with one thing I can't has always annoyed me.
My new team is going through this. For comms, my machine came equipped with Skype for Business, Slack, Stride and Bria. It's a fun game rolling the dice when you need to ask someone a question figuring out which comms tool that person uses.
A game I've avoided playing altogether by just sending an email.
For people who deal with different groups of people in the company, shouldn't it be up to them to handle communicating with different groups using different methods rather than compelling everyone to use the same communication platform for instant messaging?