I've had loads of issues with Google and continue to, even as a paying Apps customer. Not one has ever got resolved in my favour. It's like talking to a wall.
"Don't grow too big" is an insufficient but absolutely necessary condition for "Don't be evil".
I hope Dropbox doesn't grow too big.
My developer account and apps randomly disappeared from the Chrome Web Store. Even after providing a receipt of the verification payment, they said sorry I have to pay again. It was only $5, so I just did that, not a big deal but it took them weeks to tell me that and I lost lots of users in the time. If $5 means nothing to me, what does it mean to a billion dollar corporation?
And managing app accounts is a joke. I still keep getting errors while trying to log into various services. Do I want to contact Google support to sort it out? Hell no.
If you will not contact them to sort things out how can you complain? You contacted dropbox...
If blindly defending the corporation is what sails your boat, bon voyage!
I'd be worried about Google doing the wrong thing correctly and Dropbox doing the right thing incorrectly.
Given that, I'm not sure who I would actually trust more.