I agree with you that consumer hostile behaviour should be illegal. Realistically, governments want this because it gives them more control so its not going to happen.

"its from China" is a good reason for many countries. A lot of countries are currently worried about their dependence on the US. They would have a lot more to worry about if they were dependent on China. Is it a good idea for European countries to put themselves in a position where China could disable half the vehicles in their country? The same for every Asian country that might have a dispute with China. Just borrowing money from China has proved to be a disaster for some Asian countries even without a dispute.