Who pays for the interesting structures, ponds, waterfalls, and arenas? It ultimately always boils down to where does the money come from -- think of "data organising" as the circulatory system of an extremely complex, multi layered, and global economy. It's not the most efficient and a lot of people learn to live in the cracks getting paid for doing virtually nothing, but it's necessary if we want to continue to create.

Also: if people were interested in endless artificial ponds, waterfalls, and interesting structures, and there was any money to be made in it (vs the cost of building them), there would probably be a market for it. I suspect not many people are interested, and they'd rather protect what nature already has.