So you truly, but truly, think that Microsoft developed a method of calendar synchronization? And that this so-called innovation is so non-trivial that it could only come from this amazing place of innovation that is Redmond? And maybe you also believe that Google or whoever coiped this invention.
I think they were one of the first to have such a thing (Microsoft were after all a pioneer in this field) and, due to the uniquely stupid way the USPO works, were allowed to patent it. That's the playing field we live in and if you want to join in you have to play the game. Doing a Google and just knocking up a clone of successful products, largely from existing open source code, then whinging that you can't just have everything your own way isn't really a great strategy.