This is a very interesting point. Is there any IP in Slack? Or can Microsoft build it in Office / Skype / etc etc and basically block Slack off of the enterpris

This is a very interesting point. Is there any IP in Slack? Or can Microsoft build it in Office / Skype / etc etc and basically block Slack off of the enterprise? Building the ecosystem would be tough, but the capability seems doable by Microsoft or any other company with resources (Google?).