Quite the opposite. The moment facebook provides a way for a person to use a device to view information, they've simultaneously produced something the device's

Quite the opposite. The moment facebook provides a way for a person to use a device to view information, they've simultaneously produced something the device's OS could use to exfiltrate that information. There's nothing facebook can practically* implement to allow Windows Phone users to use Facebook while preventing Microsoft from exfiltrating data. Drop the API, and they can scrape webpages; it doesn't remove any fundamental barrier to information. If Facebook wanted/needed to limit access to this information from untrusted device manufacturers, a website is out of the question, and you couldn't just release a windows/android/linux app — you'd need to go per-manufacturer. This leaves pretty much everyone worse off. [though it'd be pretty great for Apple.] Users need to trust the manufacturer of the devices they use. There's room for regulation/enforcement to ensure that they can. But holding services responsible for vetting the platforms that can access their data makes open platforms like the web untenable, and doesn't fix anything. * Impractically, facebook could send and show encrypted data which can be decrypted by the user via pen & paper.