For indoor farms ultimately it comes down to electricity cost. If you’re in an area that uses fossil fuels for electricity production then it is prohibitively expensive, but if you have cheap hydro power for example it’s much more economical.

That said, just using the image above as a reference, they could absolutely utilise the natural sun lighting while being much more space efficient and grow vertically. You are correct that the up-front costs of hyrdoponic systems are high, but over time they use substantially less water and plants grow way faster and more efficiently.