The FCC has never really had much control over content other than some limited "decency" rules for broadcast networks. If you want them to suddenly start fully regulating content for broadcasts, cable, and internet then you and I just completely disagree on this issue.
I think it's short sighted to assume that the government will do the right thing with that power and not use that power to control people significantly more than any alleged control by businesses. Businesses at best have indirect control where as the government would have direct and total control over the regulation of content at the whim of the current group in power. I'm also not sure how you think giving a government that in your mind is controlled by corporations more power to regulate content would lead to less control by corporations. The gaslighting and disinformation would only become worse and be under the complete control of whoever has control of the government and that control may never end since they will more or less control what people think and who they vote for. IMO, you're asking for 1984.