Sorry, but _you_ need to grow up and learn. You might want to read up on corporations and practices and check out what other corporations in other sectors do and get away with.
MS is a corporation, they are not a person, hence they do not have to play by what we would call human moral and empathetic guidelines. Corporations are designed to do [mostly] one thing - make profit. ALL corporations are like this, all corporations do this.
I have some news for you, if it were not for Microsoft, we would not be where we are right now in computer technology. At the dawn of the PC age, IBM sure wasn't thinking of the average joe-desktop with their computer prices and technology and marketing strategies. MS is large enough to provide technologies, api's, libraries, development tools, so that we have computers at the level that they are. If MS had never existed and we were stuck with Linux and OpenGL, we would be years behind where we are now.
Do you not think for a second that Intel vs AMD do the same things against each other? Or ATI vs NVidia? Or other non-computer-sector corporations? Corporate espionage, buy-outs, market competition, etc., have all long been here before MS was even started, and are just as prevalent in every other corporate sector. There are mega-corporations in other sectors but I don't hear you bashing their practices.
MS is just taking the same advantages that every other corporation does. Why should they have their hands tied behind their backs while other corporations do not?
What about Autodesk? They have bought out much of their competition and own all of the popular 3D applications and the largest market share and set market prices absurdly high, why aren't you screaming at them?
Or Apple and their tactics with their iPod/iPhone/iTunes/AppStore?
Or maybe you just hopped onto the "let's all hate MS" bandwagon.
There is nothing at all stopping you from creating a competing OS or applications and beating MS. Other companies have done it before. If you don't believe me, look at MS Money vs Simply/QuickBooks as only one example.
Welcome to corporate commercialism.
In this specific case, Opera is simply trying to get the government to shoe-horn them into another corporation's insides, which is wrong on many levels. If Opera can't take the competition, they should get out of the market.
This entire idea that its ok to be of the mind that "[MS] Goliath is big, let's throw rocks at him" while [Opera] David is actually being an arsehole himself, is wrong and dangerous.
If they can't even make a good browser, do you want their technology used in important areas of your OS? Not me.