Let's remember that Compaq is gone because they were acquired by HP. Compaq had troubles of course, part of which was their acquisition of DEC without really knowing what to do with it.No doubt that would have been a better strategy, but it assumes you knew the future. Compaq was at one time one of the biggest computer companies and even bought huge manufacturers. Now they are gone.
Your point is valid though - it's kinda tough to know which rock-solid-today companies will remain rock solid tomorrow - and which of the middle-tier companies will become giants. Who would have guessed in 1995/96 what Apple would be twenty five years later.
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