> Unfortunately this can be a race to the bottom

This works as an argument against 8h work day and 5-day work week too.

Ultimately if something is better for the society (and WFH obviously is - commute time, carbon footprint, land prices, housing crisis - it helps with almost everything) - we should just force companies to use it by regulation, so that there's no "race" in that regard cause the conditions are the same for everybody.

The exact regulation is tricky, but sth in the spirit of "if your job can be WFH you should have an option of WFH" is a good starting point.