(Up to: Economics )

"Capitalism" vs Open-Source is an example of this. Or more specifically, for instance, Microsoft vs Linux.

Capitalism, based on competition and society "meshing" based on each actor acting in their own interest, is now firmly involved in its own competition, finding itself in a position where it is defending itself from the large-scale accumulation, and application, of public ideas. In other words, the system as a whole is up against the alternative paradigm of many, many decentralised people pulling together. This is very similar to the idea that groups containing "altruistic" organisms are more likely to survive than groups that don't.

The Cold War was a form of this - a very large scale, international form - but isn't that comparable, for various reasons:

• Structure/Hierarchy: Open Source is more "bottom-up" than 60's communism, and thus often equals the idea of diversity found in capitalism. Open Source is still a market of ideas, but the reasons for (and hence, methods of) exchange is different.
• Location: Open Source is more "situated", in that it is in direct competition (including geographical overlap) with capitalism.

The neo-capitalists see open ideas as an enemy, and vice versa.

Other examples:

• Registration-required websites vs Bug me not (in fact, this got me thinking about it in the first place).