Greg Ferro has a similar idea in the network space, which he calls "babies and dolls." Today's network infrastructure is like a baby--very needy, requires constant care and monitoring and is expensive to keep up. What we need are dolls: cheap, easily replacable components that we can get rid of when they've stopped being useful.
I think the problem with your vision, however, is that the tension you highlighted early in your article--creating value vs. managing risk--still exists in most organizations, and that's going to be a very difficult tension to resolve.
Is a CIO really going to go in front of a board and say "We made X investment in a new private cloud model and it failed--but hey, we're taking risks. Isn't that great? Can I have some more money to try again?"
There needs to be some serious changes in incentives and risk tolerance, starting at the top of the organization. It doesn't matter if the folks at the bottom are willing to embrace risk if executives won't tolerate it.