I'm not sure you can distinguish those. It is IBM, and IBM has a preference for who its customers are. So do enterprises, who like the sound of "no one ever got

I'm not sure you can distinguish those. It is IBM, and IBM has a preference for who its customers are. So do enterprises, who like the sound of "no one ever got fired for..." And it's also because the market is pretty small (at least in terms of sites) - there's just not that much total accessible market for any competitor.