Mainly, I think you're projecting here.
Lots of different people want different things out of social media platforms, so just because you want one thing doesn't mean that's the right thing for all. There's more diversity here than that.
So I'd say we should focus on letting users shape their own experiences rather than dictating what should and shouldn't be available on the platform for all.
I shouldn't be shaping this platform for my wants any more than I think you should for you.
Empower users. Let them chose to engage with corporations or not.
After all, topically, some people like Superbowl Commercials, even if I've no interest in those.
So I appreciate being empowered to turn off the corporations when I'm not interested.