Miserable commutes were already solved with remote work for all who can and want. Fewer drivers makes for a better commute for those remaining

First, no, it wasn't solved. In fact, many tech companies that previously allowed remote work went back on it. Technically yes, I can "solve my commute" by taking a very significant pay cut (more than 50%), in addition to limiting my career prospects overall (or get lucky to get hired by the few competitively-paying top tech companies that still stand by remote work, which would still significantly limit my career just to those few companies). That's a proposal/trade-off that a lot of people would reasonably consider unacceptable.

Second, do you realize that remote work isn't an option for a significant majority of types of jobs? In fact, even if we lived in some magical world where every single software dev suddenly switched to remote work, it would barely make a dent. Janitors, doctors/nurses, school teachers, etc., those jobs just by nature don't allow for remote work.