Economic colonialism, i.e. the old boys imposing their will on the new boys, that's it. Case in point, that UAE company which was not allowed to purchase the management contract for some ports in the USA (https://en.wikipedia.org/wiki/Dubai_Ports_World_controversy), the US air business market that only allows American-owned companies, or any big acquisition involving Chinese money on American soil, which automatically creates a "strategic/national defense" discussion.