I am reminded of Slack which has a similar history of rapid growth followed by a very competitive market and then significant slowing. Maybe Salesforce could acquire Dropbox and bundle it into their offerings or some other similar company?
If this isn't the full picture, let me know. I was at multiple companies trying to move away from Slack as the cost was not justifiable
In the end, Microsoft is IMHO once again abusing its stronghold on the market. Just the enterprise-compliance-integration stuff is more than enough to cause any medium or large company to move off of Slack or its competitors (e.g. Mattermost).
Slack displayed alot of hubris and didn’t pivot. Their goal should have been Microsoft or Google acquisition.