I mean, this kinda only applies to devices that need the highest energy density.
For situations where space isn’t much of an issue, it can make more sense to use other forms of batteries that are cheaper per MWh. I agree Li-ion won’t be replaced in phones etc. but for some applications that are stationary, it can make commercial sense to use something else.
And they are being built and encouraged in Europe. I’d recommend anyone travelling within Europe first check for train routes before booking a flight.
That said, while they are improving the situation, building new rail lines, tunnels, bridges, etc., and changing the regulatory environment to allow more competition, these are slow improvements to make.
I checked and Zurich-Bilbao has few high-speed sections. They’re building new high speed lines near Bilbao, but infrastructure takes time…