The days when IBM's mainframe computers held a monopoly on enterprise computing may have ended with the influx of cheaper x86 and Unix servers.

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Microsoft has established a spectacular monopoly in the modern enterprise and in productivity tools.

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Private enterprise has already figured out a way around the monopoly: electronic communication.

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IBM's Adkins responds with the company's usual argument against those antitrust attacks: That because mainframes now compete with x86 and Unix servers sold by many vendors, IBM's mainframe monopoly is really only a small slice of a much larger enterprise computing industry.

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