The British government still owns the rails and prioritizes passenger service, though, unlike the US. NR bought it back after Railtrack folded, if memory serves.
If Amtrak owned the rails and leased to freight, instead of the other way round, I imagine it'd have a similar level of service. As things stand, there's zero incentive for the track owners (freight companies) to update the lines for speeds higher than they can cheaply ship at.
FWIW, I live in Croatia and even we have tilting trains these days. It's downright embarrassing that the US is so far behind.
The basic problem with the US rail network is it's optimized for freight, especially outside the Eastern corridor. Who owns and maintains the network is probably less important than where it goes and the fact so many lines are single-track. If we wanted to put in a decent passenger rail network we're almost starting from scratch even using conventional trains.
If Amtrak owned the rails and leased to freight, instead of the other way round, I imagine it'd have a similar level of service. As things stand, there's zero incentive for the track owners (freight companies) to update the lines for speeds higher than they can cheaply ship at.
FWIW, I live in Croatia and even we have tilting trains these days. It's downright embarrassing that the US is so far behind.