This is meant to be an interactive discussion, I like to hear how you think on the very simple question of the factor that keeps the wealthy looking for more ways to make more money.
In where I live there is a saying that is often said by people "a lot of flour that we can make cakes" means rich people have a lot of economy, So it's easy for them to open up several businesses that can produce the economy, flour is nothing we can do, nothing.
The era of advanced technology today, by having a lot of money, the money can be varied to make more money, so that the rich people get richer, that's how life in this world.