[sacheendra]

Regarding your point about economic value. Things don't have any in inherent economic value. Price is a function of demand and supply. A thing is only worth something because somebody wants to do something with it.

So, a theorem which says decentralised scheme "costs" more than economic value is not possible to have.

For example, say gold is very expensive to synthesise. But if it is absolutely necessary for some job the cost becomes worth i9t and the price would reflect that.