One thing I've realized is that it's best to think about crypto and smart contracts as a foundation to build upon. They're tools in our toolbox. What we build is up to us.
In the future, I don't think we'll see many monolithic contracts like you're describing (no USA smart contract). Instead I think we'll have a bunch of small, simple, and battle tested smart contracts that we can fit together like lego bricks.
This is what people said about objects in the context of object-oriented programming and it never really happened. Currently software doesn't really feel like lego bricks, it feels more like the mix of legos, mega blocks, duplos, kaplas and playmobiles that I played with when I was younger. You can build lots of stuff with it, and they can kind of go together, but not as easily as things from the same brand.
Yes, and it's full of little packages that are made to make sure one package will work with the other. In my example, this would be duplo to lego connectors, duplo to mega blocks connectors, lego to mega blocks connectors, etc. I also often write myself glue code between two packages.
In the future, I don't think we'll see many monolithic contracts like you're describing (no USA smart contract). Instead I think we'll have a bunch of small, simple, and battle tested smart contracts that we can fit together like lego bricks.