re: Kylin
The EU would do well with something similar. A supported version of AOSP (with its own app store and possibly other key services) wouldn't go amiss either. The idea with these would be that all software and hardware bought with public monies in the EU would have to support these not that they'd be mandatory to use. Creating some competition like this would be good, as would the strategic independence in case of Trump mk II (i.e. someone not only malevolent but also competent with it) especially considering the cost of a relative pittance.