There are thousands of people, myself included, saddened by the news that Google are shutting down Reader in a couple of months. Why did they do it? News is now coming out that the Mountain View-based company closed Reader due to the hidden costs of keeping users' data private.
This is coming from an unnamed source of AllThingD, who said that the closure of Reader is at least partly due to Google's reluctance to build out the staff and infrastructure needed to deal with the legal and privacy issues related to Reader. The source added that Google are trying to position themselves so that they stop getting into expensive lawsuits, by adding dedicated staff to deal with legal issues to each of their teams.
When Google announced the closure of Reader, they didn't even have a project manager of full-time engineer dedicated to it. Google reportedly didn't want to spend the money building the service into a full-blown app, and on the flip side, didn't want to sell it to a third-party because of its deep integration with other Google Apps.