DNS is one of those things,
False.
do note that neither of these are exclusively owned by the US,
False.
but rather that the US owns the responsibility to maintain these services that we all use.
False. The US has no responsibility, they own it.
even the dollar as reserve is a fickle thing that could change if the rest of us choose to.
And until other countries choose to, they get to deal with the consequences of their shortsighted reaches for centralization.
we could all just drop the US as our client provider and tank the american economy.
Good luck, there's plenty of software in Europe with hardcoded URLs, and there's no chance of getting operating systems in Europe, which are contributed to almost exclusively by US companies, to switch their DNS over to something that isn't ICANN-controlled.
we don't, because shit like this isn't supposed to happen, but push hard enough, and it will
The US has performed coups on foreign countries at least a dozen times. Other countries won't do a thing, as is shown by historical precedent.
you already see russia and china going this route.
Neither of those run their own DNS, they leech off of ICANN, and occasionally block things or modify records. Were ICANN to disappear, both would be in disarray.