Here's one reason why we don't scan people's system for interesting private files and secretly upload it for our economic benefit:
1. It violates the user's trust, expectations and privacy.
Here's a second reason:
2. It is a criminal act to do so.
I don't buy these discussions about how it is Apple's fault. It's not. It's illegal to steal private data like this. The companies doing this should be raided and shut down by the FBI immediately. All of them. Whether or not they issued a tearful apology.