I don't have strong evidence for this, but I always feel like this is true until you get right to the very top - the individuals and organisations that are considered leaders in their fields. The difference between those people/organisations and the rest is often exactly that they are supportive, collaborative and doing things for the right reasons relative to the big picture rather than their local political context.

It's harder to succeed if you don't engage with the "playground tactics", but those who do are the ones pushing society forwards.