Rapid leaps in knowledge come when information is freely shared.
Idea Communism has nothing to do with the political system. It’s a term originating from the scientific community, describing the benefits of openly sharing your information with other teams. This includes teams you compete with.
This is in contrast to hoarding “secret techniques” for fear of opponents obtaining your knowledge or discovering weaknesses in your game. In contrast, it’s far better to discover and eliminate these weaknesses early rather than trying to conceal and obscure them.
This is akin to the open source movement in the software development industry, where source code is openly distributed.