Microsoft spunks $500m to reinvent the wheel. Why?

Baffling costly mobile app acquisitions don't add features or IQ

Comment As strange shopping expeditions go, this has to rank alongside London Bridge being bought, dismantled, and then rebuilt in Arizona. The world's biggest software company, Microsoft, has now spent half a billion dollars on mobile apps that are poor cousins of its own Exchange and Outlook software. Apps that, in some cases, don't natively work with Microsoft's server software."