So? They own many assets like gold, land, real estate, pension funds, some stocks, some companies etc. And can always give out their own currency with forced value attached to it. And will probably start owning Bitcoin or other assets themselves. Taking down a state isn’t possible that easily.

Not just for payments, Bitcoin is money. If you don’t ask yourself why do we need better money, then maybe you don’t understand how the current monetary system is putting you at a disadvantage and making you poorer than you would have otherwise been. And is making entire financial systems fragile. That is what Bitcoin is here to fix, the only money that doesn’t require trust to work as the trust based money model always failed and will always fail.

And one addition, in the hypothetical case that so many people are pro Bitcoin that they would try to defund the state, if the state is against it. All it takes for the state is to appreciate Bitcoin and make it legalized to keep their power, it doesn’t even take force. So a scenario where a state would fall is highly unlikely.