>foreigners are a bit more likely to be loyal to the government
Yes, to their own government! Both China and USA have laws to force companies to insert backdoors. These laws have been enforced numerous times. If you think this is a smaller risk than doing things nationally, then indeed you're basically arguing that Spain is Somalia, there are separatist forces roaming around, the country can't enforce its own laws and the government needs to sell everything to foreign governments to stay in power. This is not the case (for now).
Yes, to their own government! Both China and USA have laws to force companies to insert backdoors. These laws have been enforced numerous times. If you think this is a smaller risk than doing things nationally, then indeed you're basically arguing that Spain is Somalia, there are separatist forces roaming around, the country can't enforce its own laws and the government needs to sell everything to foreign governments to stay in power. This is not the case (for now).