Increasing usage trivially and obviously increases capacity by ~the same amount. A toddler could understand this, because obviously the lights are still on. We use more and more energy every year (except 2020, for obvious reasons). There aren't rolling blackouts. Thus, capacity responds to usage.
I don't know why you're reaching for the word "magically". There's nothing magical about the mechanism of how this happens. Its just market dynamics. If explaining it by calling it "magic" helps you understand it better, though, then that's fine.
I don't know why you're reaching for the word "magically". There's nothing magical about the mechanism of how this happens. Its just market dynamics. If explaining it by calling it "magic" helps you understand it better, though, then that's fine.