I think it doesn’t make sense too. But full WFH opens the option of moving to another LCOL city to have a bigger place for less money and potentially more quality of life too.
People that can do this would end not taking into account the location of the job when choosing the place to live. This will take time to sink, but in my opinion is the likely consequence.
But why tax everyone to subsidise the trains for the ones that use them? Even more so for tourists that barely pay taxes here and would have paid the full price anyway.
With the normal ticket prices people pay for that they use, which sounds more fair to me.
I don't think salaries across Europe are comparable. There are huge discrepancies between locations.
For example, in Berlin it seems to me that average salaries are around 70k EUR/year (6.6k USD/month) and really good salaries are well above 90k EUR/year (8.5k USD/month).
You can see more data in https://www.levels.fyi, which it is skewed to the high side, but gives you an idea about what good offers are nowadays.
People that can do this would end not taking into account the location of the job when choosing the place to live. This will take time to sink, but in my opinion is the likely consequence.