Teams and Slack have covered the collaboration market quite well (and there are others as well). What really took off are video conferencing solutions (e.g. Zoo

Teams and Slack have covered the collaboration market quite well (and there are others as well). What really took off are video conferencing solutions (e.g. Zoom). Google had products here but were never able to offer a single, easy solution. If they had combined Duo and Hangouts from the start, maybe they'd have the success that Zoom now has.