Why do anarchists stay on reddit or other corporate-run platforms?

I know these federated communities exist as well as raddle, but it still seems like most people will stay on toxic and corporate-run platforms like reddit or Twitter. I'm far from perfect myself and I still use reddit sometimes, especially for more niche communities, but when it comes to ideologically strong communities like the anarchist ones, it just feels wrong that the majority still hang out on reddit. Or you know, moving to something like Bsky when Twitter became too toxic but which is still run by a large, for-profit corporation (if they moved in the first place). What are your thoughts? Is there any justification for this?