Ubuntu, one of the most widely used Linux distributions, just announced that it is halting its cloud storage service so it can focus on its desktop and mobile operating systems:

Shutting down Ubuntu One file services

This sounds like a good example of a company trying to focus on a core product rather than be bogged down trying to compete in another arena. A few key quotes:

Today we are announcing plans to shut down the Ubuntu One file services.  This is a tough decision, particularly when our users rely so heavily on the functionality that Ubuntu One provides.  However, like any company, we want to focus our efforts on our most important strategic initiatives and ensure we are not spread too thin.

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Additionally, the free storage wars aren’t a sustainable place for us to be, particularly with other services now regularly offering 25GB-50GB free storage.  If we offer a service, we want it to compete on a global scale, and for Ubuntu One to continue to do that would require more investment than we are willing to make.