It seems that this capitalist source can only see class war as an option, not changing the system. Hence, one must assume that they are girding for war. Well, there has always been class war since the beginning of the agrarian age (see this for more explanation), but what I mean is a more aggressive level of class war, something like fascism.
...modern society cannot run according to the individualist credo of Ayn Rand; economic systems, to be credible and socially sustainable, must deliver results to the vast majority of citizens. If capitalism cannot do that expect more outbreaks of violence and greater levels of political alienation — not only in Britain but across most of the world’s leading countries, including the U.S.