Because often it is cheaper to exploit the limited resources because that is what we have done for decades and already have a good infrastructure around it. The

Because often it is cheaper to exploit the limited resources because that is what we have done for decades and already have a good infrastructure around it. There have been a lot of innovation in the area of renewables and "unlimited" resources such as solar. But it is not being driven by people needing more energy but by various regulations and now also price.