They could, but they don't have any obligation to. How many of their online service they shut down was eventually open-sourced? I can't think of any. Also ther

They could, but they don't have any obligation to. How many of their online service they shut down was eventually open-sourced? I can't think of any. Also there are other things to consider, we know that Greader was running on auto-pilot for a long time, and the people who worked on it are either not with Google any more or are working on some other project. In order for them to open source this project, they either had to get those people back to help them opensource it or they would have to get new people to run down the whole codebase and take out portions that can be potential security/vulnerability issue. Looks like to me thats a lot of work. There are tons of free and open-source RSS readers out there, some are pretty darn good. Why bother?