How much copying is actually happening? I live in the US, and our healthcare system is objectively terrible. There are numerous examples of systems in other countries that provide better care for more people for less, but we refuse to adopt any of them.

First past the post voting is also obviously terrible, and many better ways are available and have had successful implementation, but nothing changes here.

Theoretically what you're saying makes sense, but it doesn't seem to match reality. Instead we just get a lot of tribalism, war, and death.