The first thing any business would do is to take a look at what happened right before the loss of income. Lets say they got rid of a certain gun or something in the black market. They would most likely add it back or something else of similar stature. If that doesn't work they may try to get money in some other form. If that doesn't work, Combat arms will actually start to lose money for the corporation and then it will most likely be shut down. Now before you say anything back, I know that nexon is a big company and combat arms is a popular game, it would take a lot of time for nexon to get rid of it so I doubt it would even come to that.
Also, for a free game there isn't going to be top of the line quality. And even though you may not lag anytime else when on the computer, Combat arms takes up a lot of memory so it could be you. Without turning this argument into some childish fight I would like to say that I am looking at this from a business like view where as you are seeing it from a consumer view.