I also recall reading one of the EU's regulators (was it Joaquin Almunia?) say that (paraphrasing) "we start sniffing around when any one party gets a market share north of 60%." Unfortunately, I cannot find that article.
True, and the reason is that a 30% UK-wide or a 50% Europe-wide market share can easily turn out to be a 100% market share in many local markets. Tesco defended itself by saying that 98% of consumers have access to five different super market chains within a drive time radius of 30 minutes. Make that a more realistic 10 minutes and the picture changes dramatically.
Anti trust is such bunk...
Let's imagine a hypothetical world where Company A owns 80% of the smartphone market and the rest is divided between the also-rans.
Now imagine that app developers can't profitably make a 1st rate app without getting the income from company A's app store (But can port the app to other OSes for extra income). If company A starts to use this situation to make it harder to port apps to other companies OSes via strongarm tactics, then company A is abusing its monopoly position of being the only profitable way to make an app.
Today's world is nothing like that, but it's an example of how near-total marketshare is not necessary for anti-trust to come into play. There is a certain point at which you have a large enough market share, that certain other players in the market must deal with you to get the volume needed to compete, particularly in high-volume, high-upfront cost industries (which many types of software qualify as).
"This makes life extremely difficult for the only company brazen enough to sell an Android fork in the west: Amazon. Since the Kindle OS counts as an incompatible version of Android, no major OEM is allowed to produce the Kindle Fire for Amazon. So when Amazon goes shopping for a manufacturer for its next tablet, it has to immediately cross Acer, Asus, Dell, Foxconn, Fujitsu, HTC, Huawei, Kyocera, Lenovo, LG, Motorola, NEC, Samsung, Sharp, Sony, Toshiba, and ZTE off the list. Currently, Amazon contracts Kindle manufacturing out to Quanta Computer, a company primarily known for making laptops. Amazon probably doesn't have many other choices"
>"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.