In the Internet age, we have no choice but to entrust our data with private companies: e-mail providers, service providers, retailers, and so on.
There’s nothing new about creepy stalkers with access to private information. They’ve probably existed as long as there has been private information.
Your Facebook and Uber data are only protected by company culture. There’s nothing in their license agreements that you clicked “agree” to but didn’t read that prevents those companies from violating your privacy.
That’s a problem. Technologies exist to ward against abuse, but they need to be implemented and supported by people and processes. And that probably means regulatory oversight.