"Other platforms have granted us access to systematically track public debates on their platforms, but X has refused to do so," said DRI's Michael Meyer-Resende in a statement on Wednesday, announcing the lawsuit.
I assume it varies by platform. Meta has a service that makes data available to vetted academic researchers, for example, so keep in mind that "available to researchers" does not necessarily mean that one can just post a link to it on Hacker News.
If there's a specific platform you're thinking of, there's probably someone in here that can direct you to the right place. What platform are you thinking of?
What others share just info for free?