I led Facebook’s efforts to fix privacy problems on its developer platform in advance of its 2012 initial public offering. What I saw from the inside was a company that prioritized data collection from its users over protecting them from abuse. As the world contemplates what to do about Facebook in the wake of its role in Russia’s election meddling, it must consider this history. Lawmakers shouldn’t allow Facebook to regulate itself. Because it won’t.

Facebook knows what you look like, your location, who your friends are, your interests, if you’re in a relationship or not, and what other pages you look at on the web. This data allows advertisers to target the more than one billion Facebook visitors a day. It’s no wonder the company has ballooned in size to a $500 billion behemoth in the five years since its I.P.O.

The more data it has on offer, the more value it creates for advertisers. That means it has no incentive to police the collection or use of that data — except when negative press or regulators are involved. Facebook is free to do almost whatever it wants with your personal information, and has no reason to put safeguards in place.

For a few years, Facebook’s developer platform hosted a thriving ecosystem of popular social games. Remember the age of Farmville and Candy Crush? The premise was simple: Users agreed to give game developers access to their data in exchange for free use of addictive games.