The "Zero-Sum" Fallacy
3 points cannot be shared by two teams
Fallacies come in many shapes and forms. Fallacies can lead people to bad behaviour or misbehaviour, e.g. people incited into violent actions based on misinformation they saw online. But one very common fallacy is that collaborations/cooperations are doomed to fail and therefore, in order for you (or your group) to go up, some other person/group must go down. This oversimplification or overgeneralisation (based on patterns in particular natural settings) can lead to mutual destruction and thus net destruction.
Fallacies like "zero-sum" - especially in the context of foreign affairs including war - are utterly ruinous and we see a lot of the same in the software world. It can result in software that is collectively or ubiquitously worse, more limiting, and lacking in choice. Clown computing is all about limitation, typically sold to us as "simplicity".
Free software or software liberty is a condition where hiding "secret sauce" isn't quite possible (not legally), so collaborations/cooperations are judged by be preferable, beneficial to all sides. That's why a lot of Free software eventually becomes better than proprietary (and older) counterparts. █