You’re describing the standard neoliberal argument for free trade. It kinda makes sense on the surface, if you don’t consider its externalities such as its impacts on labor and domestic aggregate demand. Luckily you don’t have to guess what their effects are as you can see many of them in the US today. For example the rise of Trump and the desire to do away with the remains of the American democracy. Walking down that path to its end likely won’t result in maximum EVs in people’s hands.