Microsoft is 40 years old. IBM is 100. Some other old companies might not be considered "tech" anymore, but only because their market/product are better defin

Microsoft is 40 years old. IBM is 100. Some other old companies might not be considered "tech" anymore, but only because their market/product are better defined (e.g. Ford is an auto maker, but the assembly line and the concept of an automobile itself place Ford as the "tech" darling of 110 years ago, IMHO). I think if you don't see old tech companies today, it's because over time their public appearance has quietly lost the "how" (new technology, automation) and only left the "what" (search, ipods, advertising, rockets). But that doesn't mean old tech companies die.