Because it increases the prestige of your department when you can say 'we developed features which are now used by X% of users'. If you've ever wondered why every new feature in a Microsoft product seems to need to be used, this is why. It's so the team that implemented it can justify themselves.
> Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure.
It's hard to follow for me. Increase engagement in... office apps? For why?!