Where IBM draws its revenues

I was reading an interesting article by EETimes which tells about IBM's increasing focus on technology consulting business.Some say,Microsoft missed that badly(Technology consulting).Irony is IBM no longer concentrates on PC business.Well, last year Big Blue's revenue was staggering $91bn.I always wondered how 800 pound gorilla companies like IBM,Microsoft move agile in market place.I think its about continuously finding new revenue generator markets and stripping off loss making divisions.I encourage my blog visitors to read the full article in their site.