You could start with e.g. requiring full legal disclosure of what my data is used for. Apple is trying to move in that direction, but we can't be at the mercy of a private corporation no matter how good the intentions are, when it comes to user data and privacy. But Apple's new requirements on the App Store are an example of what's possible to do.

Performance and quality are a bit different, they are much harder to regulate but still possible to an extent.