No - google cannot get rid of the problem because of the revenue
That might be true with some companies but I think Google has shown that they will, whenever possible, take the higher road and make sacrifices to obtain a better product. True, it is a Wall st company, but you have to give them at least that much credit given their commitment to quality improvements. They have the funds to make a better product happen so...
I'm hoping to read more ideas, given the current lay of the land, on what "changes" might reasonably entail (Moultano hinted that they may expand beyond adsense, to links etc) and on what we should brace for. None of us know if our current link building efforts are a waste of time or not, assuming "big changes" are really around the corner.