Google tries a lot of stuff. It doesn't always work out for them, and sometimes they give up on it. I don't think that's a complete loss for the rest of us. We get to see what didn't work in the real world, and if it's really valuable, someone else can pick up the idea and build on that knowledge. I say this as someone who misses Google Reader.

Yes thats fine, but i would never trust to use one of their productions in production so to speak.

I think the negative impact lots of humans regularly experience from Google's approach to business is far more than the benefit of the very, very specific learning that "this idea doesn't make enough money for Google the way Google did it".