I think that true decentralization is difficult to obtain. It has been tried lots in the "analog" world and greed and money get in the way so you end up with oligarchies and cartels forming. Pioneerism is also a problem (those who get there first grab the goodies leaving crumbs for those that follow. Thus producing fuck all incentive for latecomers.)

To be honest I don't know what the solution is as you need to drive people to join in without the expectation of instant profit. My guess that it would have to be some form of power or gamification but that is a fucking vague concept. It also would have to not become a job to the point where it interferes with real life.