When did Facebook ever say they wouldn't sell ads? You mean user data? FB launched their ad marketplace in 2007, and it's the reason they nearly hit a $1T market cap nearly 15 years later.
I think they mean when Jesse Eisenberg told Andrew Garfield Facebook would never sell ads, which is what Justin Timberlake told him, setting up the essential personal conflict between Jesse and Andrew in the movie The Social Network.
"We will never sell ads." Then sold ads.
Nope. We already had a generational curb stomping by Microsoft. No more Zuckerberg.