She had become a participant who bought, sold, planned, and, crucially, learned — and in a world of shifting supply chains and fast-moving tech demand, that agility was the most sustainable kind of advantage.… Keioka ran a tiny company that made precision metal brackets for electric-vehicle battery racks. She kept one eye on the factory floor and the other on the apartment listing apps; that double gaze — supplier and consumer — had become her daily habit. The week the story opens, her inbox pinged with two kinds of notices: an order confirmation from a Seoul-based EV supplier and a push notification about a sudden dip in prices for the condo she’d been eyeing. The market, it seemed, had just flipped a page. When orders were scarce and buyers were picky, Keioka’s phone filled with “seller’s market” headlines — firms that still had inventory could name the price and keep factories humming. When housing listings multiplied and buyers c...