Unfortunately for capitalism as it stands, widening scope and horizon to include more externalities yields a company less competitive. Only governments can then set the rules to force all companies to do the same and level the playing field. Ideally, this would have to happen on a global scale.

A command economy, state capitalism or communism, could have the power to impose rules to include external costs on all economic agents and either subsidise their companies or create trade barriers to protect them through tariffs.