Google Drive: Dropbox, Box, OneDrive....
Google Voice: Depends what you're using it to do. Amazon & Microsoft have apps you can use that do similar tasks. Whichever you use does require access to a lot of personal data to be useful though, no matter what company you pick.
Amazon: Target, Walmart, Jet, etc... Lots of competition here. Amazon's online experience is typically better but their is plenty of competition & they often have cheaper prices. FYI in case any Target person reads this. Your site is terrible & full of bugs.