Industrial developments typically have life times of twenty years. Also, the transition will be messy, not nice and tidy. In Germany, renewables have replaced nuclear first, only now they are replacing coal. The order might be different in the US, but then again things will become chaotic if due to cutting red tape a nuclear disaster happens in the US. In Africa, solar panels are replacing firewood. In Asia, countries are returning now to using coal as an emergency measure - but people know that this is only a temporary emergency solution. China still builds coal plants, but they are designed as a fall-back to wind and solar, not as the backbone of supply. Which makes sense for them, because China has more coal than oil.