Imagine you lose access to your account, with what company do you think have better chances recovering it?
Now imagine you get some very bad data loss bug affecting just your company account. What chances are there you will ever have your problem looked at by Google? I totally believe it's 0% unless you get to HN frontpage.
It's not like Dropbox have best support ever, but I totally believe that getting a living human to look at your problem would be so much easier with them. With Google it's just impossible.