Everything you say Microsoft is doing is excellent business practice. Why is it that they are 'ruthlessly saavy' when they are being good business people and protecting their interests.
Software is a great value.
Microsoft is still vulnerable. Look at General Motors. Once the dominant auto company, buying up other auto mfrs. and parts suppliers at a rapid rate. Today, they still have competition and their market share is less than any time for decades. There is nothing wrong with securing a firm and dominant position in any marketplace.