To me this sounds a bit like what Sandcats/Sandstorm wanted to be; open-source paas that allowed basically one-click deployment of applications from open-source repository of packages.
Problem is that all parts of this process needs funding, which makes it difficult to make work. Someone needs to run the physical infrastructure, someone needs to operate the paas platfrom, someone needs to develop/maintain the paas platform codebase, someone needs to develop the actual applications, and someone needs to maintain the application packaging/deployment stuff. And all those someones should somehow get fair market-rate compensation for the work they do.
One way of providing compensation is to hand out credits for the service, but in practice it is probably infeasible to make the numbers really work out. And even if all the labor is compensated through service credits, you still need actual real money flowing in to pay for colo and hardware etc, which probably needs to come from the otherwise non-contributing userbase.
Not saying it is completely impossible thing to accomplish, but it is really difficult to bootstrap, and almost as difficult to keep running sustainability, especially when individual people inevitably come and go.
