No, I guess not. They both had someone design the system, but I guess Satoshi or Vitalik don't really own their respective systems.
I wonder if something like Towerfall could work like this... someone designs the overall rules, and then the crowd creates characters, mobs and levels that get included if they get enough votes or whatever... I'm going to think more on this...
That's my vision. I want to create skeletons and have them filled in by the community.
The future of decentralization in one comment.
Kudos!