The gift economy is something that is not mentioned too often...sad to say.
Yet you are correct...we need to focus upon the success of all, not just the success of oneself. This can be done in many different ways, by upvoting as you mentioned but also by how we conduct ourselves. What image are we presenting to newer people?
Do not forget, we all are radically influenced by environment. If we operate on here like people do on Facebook, people will conclude this place is no different. On the other hand, if we are lifting ourselves to a new level, then we are indeed showing people the makings of a paradigm shift.
Indeed we need to reflect inward and learn that we can be the best version of ourselves here.
Remove the scarcity mindset, remove the troll that only wants to enrich and be one that reaps all the rewards, remove the self-righteous person that we are and open ourselves to be more considerate, kind and supportive of other people's dreams, aspirations and talents.
This has got to be one of my most favorite posts that you have and thank that with the limited internet I have during my vacation here in the province that I read this.