[Matl]

I'd guess you took what OP meant a bit too literally, I'd say that there's so many things to change, campaign for, convince that even if you say convince enough people to vote to change this law, there's already another rolling your 'win' back being prepared, backed by interest groups with much deeper pockets.

So in the end your individual vote does little, because real power is at the hands of much better resourced interests.