Isn't this just an advertising post that somehow found its way into the 'green' section of slashdot?
There is a definite conflict of interest here, the company is in business to make money, therefore they will suggest only good things about the current product along with reasons why you should stop using the older and put hand in pocket for newer. If MS asked for one payment only, and that allowed you free choice of the OS and future upgrades, sure that would be reasonable. Essentially you can only use MS Windows to browse the web, for everything else you need to buy additional products, and this is what makes the OS a bad choice. It's a bit like having to buy something to enable you to buy a train ticket. I don't like it.