Businesses donÃ¢â‚¬â„¢t buy operating systems. They buy applications. With that fact in mind, Canonical is gradually expanding its online store for Ubuntu Linux applications. ItÃ¢â‚¬â„¢s a smart move Ã¢â‚¬â€ but solutions providers will need to keep their expectations for the store under control. HereÃ¢â‚¬â„¢s why.