You're cherry-picking counter-examples. No developed country, overall, has the infrastructural problems that America has. America just canceled its high-speed rail in California, yet Japan is already working on a maglev train scheduled for completion in 2027, and China already has one between Beijing and Shanghai. Japan's Shinkansen has been operating since the 1960s, has had zero accidents in all that time, and has an average delay of less than a minute. Germany and France also have very impressive high-speed train systems. Meanwhile, all the US has is the Acela, which is a joke.

You only mentioned airports in your examples. America can't even build rail lines that go to airports!

I did mention UK's HS2, so not all airports.

Speaking of cherry picking, I think that referring to high-speed passenger train alone is an example thereof, especially as it ignores the large and successful American fright train infrastructure. California made the mistake of being too ambitious, a more modest plan from the start would have worked.

Freight trains are useless for passengers, and worse, Amtrak actually leases tracks from the freight companies and their trains are lower priority than the freight trains, which is why Amtrak schedules are so bad. Only a really screwed-up country would have a system like that.

As for California, it's just CA, it's the whole country. Where's the high-speed rail in the northeast, where they have the highest density of people who would use such a system? It doesn't exist (and again, no, the Acela doesn't count). What about between Seattle and Portland? Why isn't the federal government involved, since this should be an interstate issue? This whole country is just a fucking disaster when it comes to public infrastructure.