With media properties selling at a discount now is a good time to buy some. (And the opportunity is bigger than just news media. People like the Kochs could have a big impact buying “soft” media like women’s magazines and websites that lean even further left.)

Breaking up the monoculture will help voters see the world from different perspectives, will provide a check on the worst excesses of biased media and may even help the John Harwoods of the world realize that they, themselves, are not actually unbiased.

Well, that last may be overly optimistic. But people on the right — conservatives and libertarians both — often say that culture precedes politics. Yet American culture is, to a very large degree, a creature of media culture that leans overwhelmingly left-Democratic. If you want to change things, you have to get in the game.

So what’ll it be, Mr. Koch?