On the other hand, employees suddenly gain a lot of free time, especially those on enormous commutes. But even for small-ish commutes and 1 day/wk in the physical office the numbers are significant - at 30min one way travel, 4 days HO give you 4 h of extra time - or 10% of their workweek. Fully remote with 1h one way travel? 10 hours or over a whole work day's equivalent of time.

On top of that employees gain other positive results like saving hard money on their car / public transport ticket and, especially for introverts or people with back issues, a large uptick in life quality as they don't have to stand in overcrowded subway cars or stuck in stop-n-go traffic jams.

The fair solution would be for employers to pay a fair share of rent and decent regulations-conforming equipment (chairs!) for those working from home - and giving a raise to those who physically have to come to the office, e.g. to deal with paperwork.