I’ve been a remote worker far longer than Covid and live in a dense (for the US) area. For me the density value comes from things that specifically can’t go remote.

Having parks, beaches, produce shops, restaurants, schools and friends in walking distance is the value.

Covid has proven those things can’t be replicated online.

If you have children it's not as if you can move anywhere even if your job allows it. Moving is traumatic for children and the places you can move to are those with adequate schools.

The benefits of remote working are largely lost on those with children.

I have a child. I live where I live specifically for the school and I don’t want to move.

Remote work dramatically increases my opportunities in my current location.

Right remote work can increase opportunities, but I should have said the mobility advantages are mostly lost on families.

I believe there is economic research that says increases in density are correlated with larger increases in productivity.

I also think the environmental cost is lower, for example if you're not burning fossel fuels in single occupant SUVs in order to do everything. My personal experience is also that avoiding that last part is good for your health, physical fitness and stress.