Indoors is much more expensive though. You've got to build the buildings and all the infrastructure. Outdoors in big simple fields has a lot of pluses. And it's

Indoors is much more expensive though. You've got to build the buildings and all the infrastructure. Outdoors in big simple fields has a lot of pluses. And it's time-tested. There's no particular reason to think that the majority of food will ever be grown indoors, or even a small but significant fraction of it. Not on Earth anyway.