We feel like people need to feel like they have investment in the stuff they create. It is kinda like when Betty Crocker re-jigged instant cake mix in the 50s to add eggs, and then people felt like they were cooking with love™. We hope that Makr gets people to be creative, and thus care more about the stuff they have online.
It a different direction than the distributed bits problem (and D* continues to exist to solve this problem), but making people care about their stuff online might actually be a harder one in practice.