This is a great article! With the current crop of decentralisation mania, I worry that we are going to over-react against centralisation (which does have many tangible benefits). Sometimes, the arguments for complete decentralisation are straw men against some spectre of over-centralisation. However, as you point out, there are also downsides to complete decentralisation. Finding the balance is neccessary, but that can't be done if every cautious voice is drowned out in a fit of zealous fervour!