Wouldn’t dry, arid, sunny places be the perfect fit for this, then? Solar power and a lack of preexisting water would probably make that scenario economically viable

The amount of energy you need goes up the less moisture there is in the air. The ideal conditions are moist, cool places with cheap electricity. Tropical conditions would have a shot at profitability, but you may as well desal whatever's already there than condense it.

Exactly this. Desalination and transport is aways orders of Magnitude cheaper and more efficient.

I don’t see this changing at any point in the near future. It’s phenomenally energy intensive to pull water out of the air in any quantity.

There are arid places with lots of cheap hydrocarbons, or alternatively, lots of sunlight.

Arid. Meaning no water in the air.

They specifically mention dessicant based tech for arid (which doesn't mean "no" water in the air) locations.

Nuclear fission ?

Desalination?

Desalination indeed is more efficient than what's proposed here. And yes, nuclear power plants often offer desalination facilities.

From the sun

Still not worth it. Just desalinate and transport the ocean. Always more cost and energy efficient.