Ground rent simplifies government. There is just one thing to measure, and one thing to collect: the value of each location.
This is a statistician's dream! Through regression analysis, every cause and effect can be measured. Does a helpful person make the nation more attractive? By how much?
Different regions will compete to attract workers. Which implies measuring and comparing the results: true science in action.
Choice of government means we are more willing to share our own data, because we support their aims, and any government that breaks our trust will lose workers and go bankrupt.
So everyone has better information, so every decision improves, and everything gets better and better forever.