Whats interesting to me is that all the big players had Video meeting software that is exactly like Zoom, more or less, pre pandemic, and they were still losing out to Zoom, just at a much slower rate. I recall Zoom pre pandemic was still a profitable business[0][1]. Not the gang busters it was during the pandemic, no, a good, profitable business none the less. So whether Google or Microsoft or Slack can win
now is debatable. They should have won this out before hand too, if you look at how things are stacked on paper. I don't know that the pandemic has changed the fact that these businesses are playing catch up in users minds.
Ironically, if anyone is going to threaten Zoom, its likely to be Microsoft with Teams, and only because so many organizations are already on Office 365 and Microsoft seems to be sinking some sales channel hooks into Teams specifically, and arguably Teams is good enough and has most of the same extension points as Zoom does, including its own add on store and API for most major integrations[2][3][4].
It seems Google is having a lot less luck here, first hand experience being that every business I've worked for in the last few years have been Google Workspace customers, yet still prefer to use Zoom over Google Meeting, despite Google Meeting being effectively free with the rest of the Google Workspace product.
I'm still mind boggled that Slack didn't capitalize on video meetings, they had all the technology and know-how, however execution matters like anything else, and I don't think they've been able to entirely execute on adding strong robust video offering to their core product.
[0]: https://investors.zoom.us/news-releases/news-release-details...
[1]: https://www.cnbc.com/2019/06/06/zoom-earnings-q1-2020.html
[2]: https://www.microsoft.com/en-us/microsoft-365/blog/2019/03/1...
[3]: https://docs.microsoft.com/en-us/microsoftteams/platform/sam...
[4]: https://support.microsoft.com/en-us/office/find-teams-apps-d...