[civilized]

The charts don't suggest to me that Teams stole Slack's growth. Slack's trajectory looks about the same before and after Teams was introduced. I'm sure there was some negative impact but it's impossible to read off what it was from the graph.

As for the rest, yes, this is an old story, but doesn't apply to all companies. Slack will always have its niche. I know of a much larger multinational that didn't ditch Slack, it just added Teams.