"We believe the spate of recent acquisitions (IBM-Fiberlink, VMware-AirWatch, Citrix- Zenprise) all add to the competitive pressures for Blackberry in enterprise mobile management (EMM) as Blackberry now finds itself competing against much larger and established enterprise vendors, as well as smaller, but better capitalized, vendors e.g. MobileIron (post-IPO)," wrote Amitabh Passi, an analyst with UBS, in a research not to customers.