Given that customers often want to avoid lock-in on any purchasing decision, it seems hard to build a service that has a larger up front psychological and legal commitment. I love the idea of getting bonus points in life for building structures with collaborative ownership, but realistically most people and businesses only want a simple “buy a service that I can cancel” relationship.

That said, I'd love to see someone try it! I think it could work well in a niche environment, or something like a Kickstarter where people feel they helped bring something into being.