Do you have examples of ccTLDs being taken down? The .com/.org/.net/etc TLDs are designated to the US. Sure, they are the most common TLDs out there, but they are under US jurisdiction.
I'd be more concerned about how the domain seizures have happened basically at the behest of the content industries, with no (appropriate amount of) due diligence done by government officials.
.com/.org/.net are not desginated to the US. They are generic top-level domains operated by a US company. Go use .us if you want a ccTLD for the US. Or .edu/.gov/.mil which are sponsored TLDs for use by the US.
I'd be more concerned about how the domain seizures have happened basically at the behest of the content industries, with no (appropriate amount of) due diligence done by government officials.