1. You didn't provide any actual evidence or deeper claims than (putting something in parenthesis). I don't really believe the coal mine claim, as in reality we don't see that happening. Mining towns are still among the cheapest and poorest towns in America.

2. That's a really naive sense of economic productivity. Here is a thought experiment.

A) Let's shut down all of Amazon HQ1.

B) Let's shut down the dams that provide 86% of Seattle greater area's electricity.

Which one of these entities is ACTUALLY responsible for that "productivity" then? And I bet you rents in Seattle without electricity would drop far greater proportionally than they do out by the dams. Rent follows incomes, not productivity.