[SpicyLemonZest]

Facebook used to be much better at locking down third-party exfiltration. But back in the early 2010s, the zeitgeist was against it; there were countless articles in the genre of "I'm a random third party developer, and Facebook is trying to stop me from exfiltrating massive dumps of my user's data! How anticompetitive!" So they decided to start being more open.

[ChrisCinelli]

Can you provide one or two of those articles?

[SpicyLemonZest]

My favorite is this one, where a guy complained Facebook wouldn't let his extension export all your friends' email addresses.

https://www.zdnet.com/article/facebook-blocks-google-chrome-...

[lacker]

Look for articles like this one:

https://www.adweek.com/digital/facebook-and-zynga-battle-ove...

Many of the initial adopters of the Facebook platform were companies like Zynga that were reliant on specific details of the platform, and got very frustrated by platform changes. Many but not all of the changes that Facebook wanted to make during this period were ones that kept data more private.

[cjhopman]

Here's an article discussing it: https://gigaom.com/2011/07/06/who-owns-your-social-graph-you...

Look at how angry the commenters there are that facebook would even consider restricting the access that third-parties have to such data.