How are neither of them being driven by capitalism?
U.S. becomes more authoritarian -> you are more afraid of being targeted by an AI drone and mass surveillance -> companies that make those weapons of war for the government (prime contractors) make billions -> they use their money to influence politics and public opinion -> U.S. becomes more authoritarian -> etc.
Capitalism is certainly one lever, but were we a communist country, I would still be afraid of the same thing. Centralization of power and ideology driving technological progress is in essence what I think we should all worry about.