In a slack antitrust environment, Watson swiftly weeded out virtually all of IBM's once many electromechanical equipment rivals.
To its huge credit, IBM and Tom Watson Jr. managed to retain this near-monopoly position through the long shift to totally electronic computing, creating the mainframe colossus of the 1960s and 1970s. Since then, monopoly power has been progressively and unavoidably dissipating. First arrived minicomputers, where IBM could never get more than a third of the business. Then, certainly came the PC and IBM's crucial decision to essentially pass its power on to Microsoft and Intel and, much less directly, to Cisco.
As great as the power of these three companies is today, it's still restricted to a few relatively narrow industry segments that account for only a tiny share of total industry revenue. Further, even the joint global power of the three giants is nowhere near what IBM alone enjoyed in its halcyon days. Understandably, the computer business has become more competitive over time. But now the Internet has come up to finish off the job.
Already, the emergence of non-PC devices and the invariably problematic plug-compatible chip competition have helped confine Intel ...