When a handful of private companies control the information everyone depends on to take part in society, the fix comes from an old and simple principle.
Once something becomes essential to public life, it stops being a private toy and becomes a public utility, bound by public rules.
We did this with the roads, the power grid, and the phone lines, because life stopped being possible without them. The digital public square crossed that same line years ago.
You cannot work, learn, organize, or reach your own country without it. So it has to be governed as what it now is, with rules no private owner and no foreign interest can override. It cannot cut you off for your opinions, and no government or lobby can secretly reach in to silence you through it.