Most people can't work remotely and productively because they are not trained to do so. E.g. You are in your office (inside your home) and your wife, your dog or child enters it demanding you do some kind of non important issue right now, distracting you from your work.You need to be trained to not them let them distract you. The people living in your house need to be trained as well on what to do.
The training for working in the(external) Office started at school, from a time fiber optics telecommunications were unheard for common mortals.
Most people feel alone because they lack the social skills to make friends outside work, or just lack the initiative, knowledge and internal motivation to work without external pressure and supervision.
The companies that will solve this issue at big scale in the future are those that solve it because the they have to in order to survive(against established companies). It will be a startup that faces all the risks involved, not an established company like Google or Facebook.
It will not be companies that could pay millions for people living in ultra expensive places and are already making big bucks doing that. They don't need to change because the system already works for them.