First off if you think "monopoly" has the legal meaning of "one supplier" you are a fucking moron. Seriously. That's the dumbest thing I have ever read on Slashdot, and I've dealt with idiots who admitted they were trolling me.
You suggested that Amazon having a "monopoly" on their own store means that they are legally a monopoly. My reference to "legal standards" was to your interpretation of the law - and I was pointing out how every business is a monopoly by your nonsensical interpretation of the law.
If Monopoly meant one supplier IBM would not have been a monopoly, Microsoft would not have been a monopoly. Their lawyers tried really hard to get off scot-free by pointing to Apple, but that shit simply does not work in a court of law.
"IBM was ruled to have created a monopoly via its 1956 patent-sharing agreement with Sperry-Rand," (http://en.wikipedia.org/wiki/History_of_IBM)
"Sperry Rand had tried to monopolize the electronic data processing industry" (http://en.wikipedia.org/wiki/Honeywell_v._Sperry_Rand)
IBM was convicted of being a monopoly by trying to become the sole company in control of a certain market. (by controlling a certain patent, which grants a legal monopoly on an invention)
http://en.wikipedia.org/wiki/United_States_v._Microsoft
"Microsoft's dominance of the x86-based personal computer operating systems market constituted a monopoly, and that Microsoft had taken actions to crush threats to that monopoly"
For MS, they attempted to monopolize their industry by attacking competitors, so they tried to become the sole supplier for their market.
Look at the plain definition of the word:
1.control of market supply: a situation in which one company controls an industry or is the only provider of a product or service
To assert that single supplier has nothing to do with monopoly is to throw away language entirely.
Now what market does Amazon monopolize? Book sales? When there's so many different sale channels for said books?
A monopoly that artificially reduces the supply of a product to keep prices low, margins high, and competition out of the field ...
Your failure to comprehend basic economics is showing.
Lower supply increases prices.
Lower prices reduce margins.
High margins are high profit, which draws competition, unlike your imaginary universe. ("Aw man, they're making high profits, let's forget competing in that market")
...but it's still fucking illegal.
Illegal like copyright and patents? Heh. You don't seem to realize that the only monopolies that do exist, exist by government intervention.