The core problem of all of these things is basic financial inequality. Powerful corporations, whose views represent those of powerful individuals, can marshal a

The core problem of all of these things is basic financial inequality. Powerful corporations, whose views represent those of powerful individuals, can marshal absurd quantities of resources at a high level of coordination, neither of which can be matched by the less powerful. (This also applies to governmental bodies, which often function like corporations.) Issues like astroturfing are just expressions of this imbalance of power. You have to solve for the gross imbalance of power if you want to solve for anything else.