I suppose in economic terms there is a lot of "liquidity" (pardon the pun). Species can move around very freely and find their ideal niche.
When I dived in different oceans, I was surprised to see the same fish (most popular ones). It's hard to imagine the same on land. Finding a niche is much easier on land, especially in mountains.
Mountains are like smaller caps - there is a lot more alpha, higher volatility but opportunity size is only a fraction.
Would be cool to make a procedural rendering of the financial markets as a landscape/globe map. "Got a cold front blowing across the tech sector today"