[imtringued]

One of the absurd things about our modern economy (it's actually a recurring problem) is that we keep spending more and more on the same on already existing values. People complain about ever increasing debt and borrowing but most of that money isn't even being spent "into" the economy, it's just used to buy land from rich individuals.

The reason why this is not "productive", is pretty straight forward. It's unproductive because nothing is being produced. We are selling what's already there long before humans existed.