The economics are different because the industries are fundamentally different. Software is never "finished" the way a building is finished. More features can always be added to software. If those new features create new product lines and attract new revenue, then the software engineers' salaries are more than paying for themselves.
But, this obviously carries risk, that the new thing you develop won't be worth as much as you spent. Bending Spoons doesn't want risk, hence their decision.
But, this obviously carries risk, that the new thing you develop won't be worth as much as you spent. Bending Spoons doesn't want risk, hence their decision.