All very good points and my suggestion is mostly in line with those points. In most decentralized systems there are no incentives (other than wanting privacy,

All very good points and my suggestion is mostly in line with those points. In most decentralized systems there are no incentives (other than wanting privacy, etc) and I agree with you that this lack of incentives has a bad effect on the quality. In many ways my suggestion is to create a base layer that is run on centralized servers (like ISPs are centralized, without lock-in) and they have an incentive to make it better because the content-creating users pay them. So the suggestion is to have a new horizontal market that enables distributed developers to create applications on top of. The examples of services (chat / reddit etc) could be written on top of this horizontal market layer where the basic data communication part is paid-for and well maintained and the developers will have much less work to make their decentralized systems ready for mass consumption.