[sib]

But lots of Slack users are captive as well (e.g., when CIO licenses Slack for <$FORTUNE_500_CO> )

[vehementi]

Slack is expensive, nobody randomly buys it for every employee

[justapassenger]

They totally do, especially at big companies. You need to show that you made a difference, and rolled out new communication platform for the whole company, not just for 5%.