In a free software community, developer groups maintain their positions only as long as they are responsive to their user bases. No one is forced to participate in a project, and the projects people participate in are the ones in which they are interested. Involuntary activity places limits on exchange and creates scarcities. As such, it is non-agalmic. But alternatives are available and participation is voluntary.
Authoritarian systems remove personal incentives for agalmic behavior.
It is positive-sum. In games theory, a 'zero-sum game' is one in which one player's gain is another player's loss. Conventional economics often describes zero-sum games. When two suppliers compete for the dollars of a single customer, or when two government agencies compete with each other for fixed budget dollars, a zero sum game is played. A 'positive-sum game' is one in which players can gain by behavior which enhances the gains of others.