One of the questions that has to be asked when talking about cloud computing is whether the comparison between computing and electricity really works, or at least how far it can be pushed as an analogy.
In general, ubiquitous electricity became possible only through standards – what would we do if people wanted to buy electricity by the volt – you buy 10 volts, I buy 25 and someone else wants 110 – well we do have 110 and 220 but we don’t have a hundred different choices.