About 100 million (startup exit, not to flex, just answering the question). Why do you ask?
https://www.collaborativefund.com/blog/the-psychology-of-mon...
Edit: looks like my joke failed
I'd love to see some non-profit R+D department for social media. And I wonder what's the closest thing to that existing right now.
On the science side there are dry studies, either relatively tiny or looking at what is there.
On the practical side there are technical people fighting for privacy, decentralization and against censorship, but with little feel or innovation beyond that.
No one does proper product research.
I wrote a concept for a curation tool in my studies, but it didn't really fit the program and I wonder where it could fit after all. Now I'm just earning money as a product manager and can't afford not to.
Not OP but just wanted to answer haha