> All I ever see is basically a religious belief that surely something will arise.

Welcome to economics! Bullshit and conjecture all the way down.

If it were all BS, how do you explain success stories like the Internet and the notion that countries on Dell’s supply chain won’t go to war with each other?

Fundamentally, economics is the belief that humans have self-interests and act on them.

Economics is obviously not 100% right - it’s not a physical science - but more often than not, you can see it in action.

Economics is closer to weather science - we can make certain inferences and predictions which can be wrong but the basic working theory is broadly correct, imho.