In the market, too, successful participants are by definition other-oriented. Conversely, the social withdrawal encouraged by some religious is antagonistic to liberalism. The primacy of interaction is visible in liberalism's inapplicability to a Crusoe. The net of interaction which liberalism proposes is best known in the forms of the free market economy, and liberal democracy. In a wider sense it includes debate, exchange of ideas, and compromise.
Political liberalism is thus pro-politics in itself, even if sometimes elitist.
This might not apply to a community based on unliberal concepts, such as class antagonism, but in general liberals are communitarians. If community among humans disappeared, liberal mechanisms could reconstruct it - by processes of coagulation and clustering in interaction. If communitarians know what to preserve, liberals know how to preserve it. There are real liberal-democratic nation states, first national and then liberal. However this is not the conflict it is sometimes made out to be.