There's a difference between taxing property and taxing the capability to do a service - and it's that nobody is interested in doing the latter, because it's no

There's a difference between taxing property and taxing the capability to do a service - and it's that nobody is interested in doing the latter, because it's nonsensical. This would make sense in a world where skills themselves were commodities that could be straightforwardly bought and sold...? But I think such a world would have a very different take on prostitution.