>"and it is such legislation which I consider bunk"
Why? Don't you think that Microsoft should have been reprimanded over their abuse of the OS market to gain control of the browser market?
Or is it because it's being held over $favorite_faceless_corp like the proverbial sword of Damocles?
However, Microsoft also rewrote IE into componentized form, so that components (eg the rendering engine) could be used by other applications, including third-party programs. This was considered a Good Thing at the time (it won the deal with AOL, for example) and made integration (as opposed to tying) a reasonable claim. This is, of course, independent of the way Microsoft handled the argument in court, which was very, very badly.
In sum, whatever Microsoft did was not independent of the actions of the US government, whose interference had extremely bad results for consumers. This includes the crapware explosion that resulted from the DoJ's removal of Microsoft's power over OEMs.
Absolutely not!
As history showed, there wasn't even an MS monopoly in existence. OSX became viable in the early oughts, Linux was always around, and now people write of the death of the PC.
Regardless, abuse of market dominance (note I don't use the overused 'M' word) increases incentives for competitors to enter the marketplace.
It's also a fact that the DoJ lost the browser case: it was overturned 2-1 on appeal.