The deeper problem here is that loosely-coupled CPUs have a value approximating 0. Your unused CPU cycles have absolutely no value to you, so what you are goin

The deeper problem here is that loosely-coupled CPUs have a value approximating 0. Your unused CPU cycles have absolutely no value to you, so what you are going to see if a fast race to the bottom in terms of price. This sounds great, particularly if you need some sort of embarrassingly parallel task performed, but most of the people providing the CPU cycles will have an artificially inflated sense of their value (e.g. "I paid X for this system and if I participate in this scheme for some period of time I should expect to get X/time back") and are not going to stick around when they learn that in return for the overhead of the cpushare system and bandwidth costs they will incur the CPU provider will end up with diddly-squat in return.