I am a fan of Google Drive. It allows for awesome collaboration, and, like the author of this post says, lets you put your storage to work. Reliable storage on its own isn't that cool; but reliable storage that empowers other applications (Docs, Sheets, etc.) is cool and extremely valuable.

The author says: "But as competitors have built elaborate offerings where you can put all that storage to work, Dropbox has kind of stagnated."

Or maybe I and the author are just gaga for Google and blind to what Dropbox truly offers.

My ironic reason for moving from Dropbox to Google Drive: I really wanted to try a 3rd party app that only offered Dropbox as a storage solution, but my Dropbox was full. So I moved everything out and now use Dropbox with a free account solely for 3rd party apps.

This is but one data-point, but perhaps 3rd party app storage and general file storage are features that don't complement each other at all.

I really tried to use Dropbox, but never got hooked.

I share most of my stuff by Git or email.