Sure, most of these services mostly work. Dropbox, in particular, is a decent way to keep all your files on hand wherever you go. The issue with syncing and storage is with the competition: There is no end to it. This sector dangerously flaunts Warren Buffett's critical investing maxim: "In business, I look for economic castles protected by unbreachable moats." Buffett likes things, utilities or railroads for example, that have serious barriers to entry. That certainly doesn't exist in the storage and sync market. Everyone can, and does, offer this service.
Google Drives over the edge. Google Drive is a reasonable file sharing and syncing service. 5 GB of storage is generous -- you can even get 16 terabytes of storage if you desire; it can sync most any file across PCs, Macs and mobile devices; and Google Apps users will find it handy, if a bit of a pain to migrate too. But it won't matter. No matter how clever Google Drive is, there is nothing to stop any digital Tom, Dick or Harry from setting up a competitive syncing and sharing service. And that, friends, means syncing and sharing will eventually devolve into a free, profit-starved service. Google Drive, Dropbox and all the rest are nothing more than vortices spinning in a draining tub. Fascinating to look at, fun to put your finger in the middle of. But in the end, nothing of substance drives the action. If that all seems terribly skeptical, well, that's me, The Digital Skeptic. (Trademark.)