The next version of Windows, which will start arriving tomorrow, won't do a couple of the things that you'd normally expect a new operating system to do as standard.
It won't immediately make Microsoft a lot of money from licences because it's going to be a free download for the majority of consumers. And it won't provide a much-needed shot in the arm for PC sales either, because many existing PCs will be able to run it, sparing consumers the need to buy a new machine to use the new OS. Windows 10 is the clearest illustration yet of how much the business model around Windows has changed in just a few years.
Windows 10 will win yesterday's battle, but what about tomorrow's war?