Certainly geopolitical boundaries reduce the pool of people. This has good and bad effects. A major aspect of open source software though is that it ensures that these boundaries can be crossed by labor but not necessarily by capital. I.e. anyone can contribute but sanctions, laws, etc. are more effective at preventing businesses from accessing these markets. This represents a sort of bottom unity that's really powerful.

That is required is a global leadership perspective. One thing I fought for heavily in the PostgreSQL community was to try to have the Code of Conduct Committee be geopolitically and culturally diverse. I would say that any time you can have a geopolitically diverse leadership team, you can figure out how to avoid interference by building a positive leadership culture.