Im sure theirs still market dominance to be had. But it wont be at the level that the US has with oil. This isnt just market dominance, its complete economic dominance. The US can controll all money because oil is sold in dollars. That wont be true for solar panels, simply because a country couldnt afford to go a week without oil imports, but a country could go years without solar panel imports, given how existing panels will still work and new panels can be manufactored domestically if needed (even if they are expensive). You cant jist manufactor oil, you meed to buy it