You speak wisdom, Ron. The monster is hydra-headed, and one approach can't handle it. A single person can only do so much, so it's best to have as many people as possible attacking it from different directions.
By the way, GG, I find that you are enunciating a completely defeatist attitude, beating the same old hum-drum that the political parties are always and forever bought and paid for so there's no point in even trying to alter them from within. If enough people get involved in changing the direction of a party, the corporations can't do anything to stop them. More often than not, the only way a corporation has been able to end a boycott, for example, is by capitulating.
By the way, my second paragraph here is not inconsistent with my first.
The person who says "It can't be done!" obviously is not going to be the one who does it. And is often surprised when someone else does.
And "by the way" #2: I am not now, nor have I ever been, a member of any political party.