It might be a good idea to talk to any agricultural economist in any land grant university in the US before you invest your life savings on that being true in the US in the short/middle term. Or any US dirt farmer. Ag land is cheap in the US, as is water. Electricity and associated infrastructure is not, nor is building high-rise buildings.

I’d guess even reclaiming land from the sea to add conventional farmland would be cheaper, if the numbers were run.

On Mars, maybe another story...