Slack never really fulfilled its promise as a stand-alone company, so not sure what you’re afraid of now.
Very unreliable at times eg latency, missed out of video calling, did not take advantage of WFH boom at all, document search was bad.
Very unreliable at times eg latency, missed out of video calling, did not take advantage of WFH boom at all, document search was bad.
I haven't had that level of unreliability issue with text, though I _definitely_ have with calls.
I would agree that Slack had an opportunity to compete with Zoom and others because of COVID that it seems to have relatively squandered. Slack calls are still less reliable and usable than Zoom calls for many purposes. You can't dial in with a phone, you can't mute other people's video or even audio (though I'm not sure Zoom offers client-side video muting either), Slack's screenshare is less reliable and doesn't have as many options for limiting what you share, and so on.
So I guess I'd say it fulfilled its core promise: "decent enterprise real-time communications", but it's the failure to innovate or even keep up with competing services in some important areas that's the issue. Maybe that's splitting hairs?