Slack has the stickiness / lock-in that I think Zoom may lack (at least for the video part). We have years of history in Slack that we wouldn't really want to l

Slack has the stickiness / lock-in that I think Zoom may lack (at least for the video part). We have years of history in Slack that we wouldn't really want to lose moving to an alternative. We do also make fairly heavy use of integrations. Trialling and switching to an alternative would be a much bigger investment and less incremental than starting to use Zoom for video calls was, even for a relatively small startup like us. They may also have a bit of a marketing problem. I was vaguely aware they had some chat functionality but didn't realize it was as feature competitive with Slack as it appears on that page.