With something like Google Drive or Dropbox, that's where I'd look.
You can say these things shouldn't exist, but then you have no support. How do you help grandpa when he has trouble with his account if you can't do anything?
The end-to-end encrypted, no-support you're-on-your-own future isn't well distributed yet, and as long as there are people who can barely use a computer without a lot of hand-holding, it probably never will be. Someone has to be helping the users. They must trust someone. Such trust can be abused.
Do you think that when Google serves your data up to the secret police that shows up in audit logs?
Obviously Google doesn't provide any real defense against court ordered snooping, but everyone (should) know that at this point. No sufficiently large company will provide any real defense, and going with no name companies doesn't help either.
There will always be people who want to make use of the power they hold for personal gain. I'd imagine this is especially true if they're unable to empathise / audit their own behavior due to their personality type.
No amount of process improvement can stop this type of exploitation as far as I can imagine. If the platform is built, we should probably accept that it either has—or will—be exploited .. or put measures in place to stop that kind of power existing in the first place.