I've been using Google Drive for years. Since when has it supported local folder syncing? <researching...> oh it looks like Google uses Linux for Android, Linux for Chromebooks, many of their developers run Linux. Lots of their data centres run Linux. But the Google Drive doesn't have a daemon for Linux. The product manager is a shitforbrains and should be fired.
It still is, it doesn't sync chunks, but only full files. Moreover, it does not have LAN (peer to peer) sync, which Dropbox does have.
Dropbox's web UI was also far better than Google Drive's. When you select multiple files to download on Dropbox's website, it starts instantly. Google Drive makes you wait
And Dropbox has basic functionality like getting an overview of shared folders/files, which is for some unfathomable reason not possible in Google Drive (instead you have to rely on 3rd party scripts that scan all files).
When I tried out Google Drive, syncing was actually incredibly poor. As in, only one computer could synchronize files at a time (meaning, if computer B logs in while computer A is logged in, computer A gets logged out). Since I have multiple computers, this instantly killed Google Drive for me.
In addition, Google Drive (at least back when I tried it out) did not have "instant" file synchronization. Meaning, it took the Google Drive app a minute or two or recognize that files have changed and to upload/download them. Dropbox always recognized changes within a second or two.
Dropbox's web UI was also far better than Google Drive's. When you select multiple files to download on Dropbox's website, it starts instantly. Google Drive makes you wait and even offers to email you when the file are ready to download. Several times, I never actually got those emails.