Give me a reason to?

Western US has huge chunks of empty land. Drop those then. It's only fair according to that logic.

Parts of Russia are shown ON THE POST. And maybe they are sparse - but they still have much better rail in those areas than most of the US! Furthering the point!

But even if we go with your completely flawed usage of land area and only the EU for some bizarre unexplained reason - The US is only twice as large. But our rail system is many many times worse. Even in areas with similar population density to Europe.

The size has nothing to do with it.