So we can just calling time-of-death on the United States' social tech dominance now, right?

Domestic tech companies shamelessly sold access to American users for manipulation by "foreign adversaries" for years, made billions, suffered no lasting consequences. Then Chinese Vine walks in, smokes everybody else in ~24 months, the mad South African buys and destroys Twitter, and Mark toddles off the cliff of irrelevance with a social network in each pocket and an Oculus strapped to his face.

I guess it was fun while it lasted.