Under the curse of knowledge

Painters have flocked to Paris for centuries to try to capture that special light that the city has become known for. Descending towards Charles de Gaulle on a sunny morning, I peek out of the window and can verify that the light really makes the view over the French capital something extraordinary. But looking down on all those rooftops, the view also strikes me as a panorama of stupidity. Why aren't more more real estate owners trying to harness the power included in that light?