Is demand for new industries like AI created or snatched from other industries?

I apologize if the question is a bit unclear. I am curious when we talk about the AI industry rising and companies such as Nvidia having a 4.5 trillion dollars market cap, does this mean another industry lost trillions of dollars of value?

Or, if we think about people individually, a person who gets their salary every month, usually spends most of it and maybe saves some. When an industry starts rising rapidly, does this mean regular people are cutting some things out of their paycheck and spending it in this new industry?

Same question for companies, that use their budgets effectively, does this means now they ditch some expenditures and instead focus on AI?