Outside of Wildstar that they ignore for some reason....
NCsoft closed city of heroes when sub was going down, but still making money They shut down Tabula Rasa very fast without giving it a chance They shut down auto assault very fast without giving it a chance (though more than TR)
Any time one of their games goes into decline or barely makes enough money (like city of heroes didn't make them enough money despite it being in the red) they shut the game down
With their track record, unless GW2 sales pickup, the vast decrease in revenue makes me believe NCsoft is in the thinking stages of "if next expansion does bad, we'll have to close GW2 or put it on lifesupport like Wildstar". And then they'll focus mostly on mobile games since that makes them a ton more money for much cheaper cost