They want foreign coders because these tech companies can literally enslave them. Immigrants have to become slaves of their employers otherwise they can be deported. They can't just quit and find a better job. They are dependent on their employer sponsoring them in order for them to legally move to the USA. Nobody is really benefiting from this except the people who want slaves. The West is still operating under a slavery system like during the early 1800s except now it's done via the 13th amendment(in the USA) and immigration. The ruling class of the West just wants a society that is just them, slaves and A.I. Of course, eventually these immigrants will acquire their freedom but for X amount of years, they have to be a slave. But then these employers can just import new slaves to replace the ones who gain their freedom.