It betrays hubris on the part of the artist to think his medium is limiting him, and I think we all recognize this.
There are sometimes problems for which there is no immediate solution, and there are sometimes problems for which there is no solution.
In fact, corporate and union moneys go overwhelmingly to incumbents, so limiting that money, as Congress did in the campaign finance law, may be the single most self-denying thing that Congress has ever done.