The concept you're describing is "Doing Well by Doing Good".

There's a qualitative difference between the pure, easily exploited Calvinist interpretation of this concept (hard work and sacrifice will be rewarded by some nebulous power that is keeping score) and the more assertive flavor you see in well-run organizations - confidence, openness and a dash of charity gets people to trust and want to collaborate with you, and you all benefit. Being the nexus of a bunch of such collaborations means you benefit the most.