Well, it's a hard question, because they won't easily come to mind - by definition. If you were 100 years old, this question might be easier. - IBM had a monop

Well, it's a hard question, because they won't easily come to mind - by definition. If you were 100 years old, this question might be easier. - IBM had a monopoly on electronic computers (mainframes) for a long time. And, hey, it also had one on "IBM" PCs for a while there... - Cray supercomputers - there's an excellent example - The original Apple II computer was a monopoly for a while. - DEC minicomputers - SUN microsystem workstations - Silicon Graphics workstations - that guy who patented the "car", and everyone licensed it from him (and who Ford challenged and defeated). Although this was a government created monopoly (a patent), it wasn't lost through government intervention. Or is that just semantics. - Ford mass-produced cars - General Electric (do they even sell light bulbs anymore?) Another difficulty with the question is how you define monopoly: "well if you lost it, it wasn't really a monopoly, was it?"