Earlier quoted context omitted.
I too don't get this. I also used Google Reader back then. When iPhone was novel and WiFi spots were rare, so people had to preload a part of the web to get through the day. When they killed it I switched to NetNewsWire and didn't miss the previous product. What was so special about Google Reader?
it worked. People liked it. And didn't need to be killed? They could have literally put zero dollars into it for the remaining amount of time left in the universe and life would have been better off.
The costs of storage and bandwidth of something as popular as Google Reader probably weren't negligible.