It’s going to be about cost of construction. You can build a lot of miles across the desert for the same price as a mile in the city. Getting all the way into the core of one of these expensive real estate markets in the world can’t be cheap. I hope they manage to make it happen at some point, though.

I can also assume the regional airports are also not overly pleased with the HSR build out too, but reducing car trips and plane flights is basically the core goal of the train.