How do file store-and-share firms avoid that sinking syncing feeling?

Oh EFSS, they'd better spread sideways. That's the impression we got from one

Interview With the demise of Bitcasa, EMC selling off Syncplicity, and so forth, the enterprise file sync and share market might appear moribund. What's happened is a trend of consolidation plus an additional of functionality for other content functions. EFSS on its own is no longer viable."