>> IBM and Microsoft weren't dethroned until roughly a decade later, so it's a real stretch to claim any kind of causal relationship.> Microsoft, strictly speaking, still hasn't been dethroned, it's just the market in which it has its monopoly has itself become less important in the grand scheme of things.
This is literally my next sentence?
> OTOH, it became less important because of other markets to which the government action prevented it from extending it's monopoly, which pretty clearly shows the relevance of the government action.
Smartphones? Somebody should tell Nokia. The only one whose actions prevented them extending their monopoly to that area was Steve Ballmer. (Or Steve Jobs — six of one Steve, half a dozen of the other).
> Likewise, the IBM antitrust action is what created the boom in independent comouter software and services businesses, which directly led to IBM being dethroned because software commoditized the computers running it.
Patently absurd. IBM's fate was sealed a few months after the start of the suit, when Digital introduced its PDP-11 minicomputer, and over the next 13 years, along with others, e.g. Seymour Cray at the high end, proceeded to disprove the DoJ's case in real time, taking huge amounts of market share away from IBM's mainframes the old-fashioned way, by offering a superior product at a (much) lower price. It was on Digital's machines, not mainframes, that software publishing (such as ...AT&T's Unix) first became a major industry.
Al Gore's representations about the internet weren't really all that bad by politician standards, but to claim John Mitchell[1] invented software development is a new one.
Around the time the DoJ dropped its case against IBM, they committed accidental suicide when they released the PC, with someone else's (Intel 8088) proprietary chips and, even more egregiously, someone else's proprietary operating system (DOS, by you-guessed-it), which enabled everyone and their brother to make their own, cut-price copies, and, adding insult to injury, giving their erstwhile chip and OS vendors gazillion-dollar licensing bonanzas that IBM never saw a penny of.
This was IBM's own dumb idea, not John Mitchell's.
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[1] https://en.wikipedia.org/wiki/John_N._Mitchell