One of the most important of these experiments today is the introduction of true compute capacity aggregators–market services where capacity is available on demand, from multiple providers, with price and service competition.

Achieving a true capacity market, in which capacity can be traded as a commodity product like wheat or energy is an extremely difficult problem to solve. In fact, I’m on record as saying it will be many years before the technical and legal barriers to such a model will be removed.

Very nice article about some services to buy and sell virtual capacity. Cloud computing traded as a commodity product.