We use Google Drive at work. It works great for storing files, sharing files, allowing group access, and simultaneous access like during meetings or training. My biggest hang up with it at work is my company didn't pay for a PDF editor to run as a Google app so I still use my hard drive and go back and forth. Our system will only run files off Google drive in Google Apps.
In my experience, our set up at work doesn't do drag and drop very well. It is similar, but not the same. We were asked to move our shared drive stuff to a different Google drive (team drive) and it won't let me just move it. I have to download folders and then re-upload them to the new drive.
The only other thing is if you want to open a new file just as a scratch file to do some temporary notes or figuring, Google will save it. With Excel, I can open a file, do some quick calcs, then close without saving and there never is a file. Minor thing.