The high-culture people will only use the high-speed rail as a means to escape the dread horror that San Francisco has become. As the obscenely wealthy depart, the city is engulfed by the low scum and the cast-off debris of society that cannot fit in elsewhere, continuing to compound and exacerbate the decay and ruin, carrying the seeds of dystopia from San Francisco all across the other municipalities of the region, some of which are already rather advanced in their own ruin. It has become a huge no-go zone.
High-culture people travel is chauffeur driven cars and private jets. But I get your point.