>> If remote is so superior, then everybody should already be doing it.

I guess, you are missing here something very important. Onsite-work got entrenched in the society because of the earlier industrial revolution, which mainly involved working at factories on machines producing tangible things. There the concept of remote work, even for the higher-ups, was not even thinkable much. This onsite-work trend, unfortunately, got carried forward in the knowledge industry too.

What your parent is saying has a very large potential and his/her point is very important in this regard. The modern industry should give a serious try to remote working, it solves many, many problems of the modern day capitalism. It's good for both the workers and the employers and for the society as well.