UNLESS it is a fundamentally demand starved economy where the wealth is concentrated in the hands of people that don't know how or have no clue how to increase flow of money.

Here's a clue: GDP goes up if people have money to buy things, which then causes people to get paid more and more jobs, which then gets more people money to buy things.

The "marketplace" or "free market" doesn't exist. Poof. Unless you are blind, "free markets" stabilize into cartel or monopoly power. Pick a goddamn industry, it is dominated by 1-4 players.