>It's significantly easier to get to team-based outcomes if you can adhere to a common platform.
Both the good outcomes and the bad outcomes. Cue the recent Slack WYSIWYG editor woes.
Slack used to have an IRC gateway, allowing anybody to peruse it from any OS, on any device, with any UX. The Slack corp. chose to supply UI for one popular platform (Electron), and cut off[1] any other means of access. This single platform focus did put Slack in full control of the UI and UX of the messenger, and able to force the WYSIWYG editor on all users.
Without the overwhelming dominance of one platform (Electron), Slack most probably would feel the need to maintain the fully featured IRC gateway, letting people interface with it fully via alternative means.
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[1] the APIs are un(der?)documented, changing, and you are on your own