No, a consistent user interface is not going to be enough. WebOS has a consistent user interface. Microsoft has a business model problem, and that's tough to fix. Application services are becoming more Web-based (cloud-based if you prefer), and Microsoft's Internet Explorer is no longer particularly popular. It's no problem running Safari, Chrome, or Firefox, mobile or tablet, to access the Web. (In many respects it's a better experience than IE on Windows.) Microsoft doesn't control much content distribution, doesn't control the dominant application ecosystems for mobile and tablets, and hasn't extended its Office franchise much less dominated in those dominant mobile and tablet ecosystems. (And those mobile and tablet ecosystems are doing just fine without Office, thanks.) On the back end, Linux dominates in the delivery of cloud-based services, not Microsoft. There are lots of business model problems here, and they only seem to be getting worse.