The mention of Unix above may raise an eyebrow or two, but once a company is forced to backpeddle on its proprietary operating system and architecture and adopt an industry standard, however desirable that may be from the point of view of the user, the firm’s a priori raison d’etre disappears, and its survival depends on it being able to offer what three or four others by definition are also offering, at lower cost and with better support and service – and it’s an unhappy fact that in those circumstances, the big get bigger, some of the small can survive because of their very low cost base, but the medium-sized either combine or disappear.