Bitcoin is not controlled by any nation state. In fact, it’s decentralized nature makes it useless to them.
The reason why the US government is willing to take drastic measures to protect the dollar is not because they own lots of dollars, but because they can exert geopolitical influence and control the international redistribution of wealth through the dollar and its associated payment networks.
In fact, the USG does own a nice stack of Bitcoin from the Silk Road seizure, and I wouldn’t be surprised if the intelligence agencies have a secret stash, too. But just owning the asset doesn’t mean they can use it to boss people around. Bitcoin’s payment network is open and free, and its inflation schedule is fixed. The only way the USG could stop it is by making it illegal, and no one knows what the opportunity cost of such a move would be.
Transactions per second isn’t a great measuring stick for Bitcoin. I would look at it in terms of savings protected from reckless inflation. If I just throw a number out and say that 50% of Bitcoins have been lost or destroyed, that leaves about $300 billion in value that has been rescued. Is that worth the electricity of a medium sized nation? I don’t know. What if that grows to $3 trillion? Or $300 trillion? How much wealth preserved for future generations is enough to justify the cost?