ecosystem .. we though Nokia would last forever.
.. googles 'present' of offering Android to the world is not an ultruistic gift, they get revenue from the Apps ~$10Bn/yr - it's like facebook adage you're the product.
But, I'm not without empathy for Trump, if you have listend to Alex Youngers speech, and also consider whether we would want nuclear power stations, or military hardware designed by the chinese, why is 5g so different in strategic importance; look at the mayhem when the ericsson/o2 network went down a while back. (out of date certificates like the recent firefox issue)