The state IS the corpos. We don't have democracies. We have corporate plutocracies — where the Venn diagram between the most powerful individuals and corporations is basically a circle.
Money is more than just speech. Money is votes, and the more money you have, the more votes you have... and all of those "votes" go to pre-vetting, pre-selecting, pre-approving, financing, and promoting the names that appear on your ballot, as well as all the bills they vote on.