Do you have any good reading for this?
In my naive mind, it’s doomed by the fact that we drive to work in the day, then all come home, together, in the evenings, when the sun is on its way down. Or is the plan to have two way power chargers at businesses too? Otherwise, all these batteries are disconnected when you need them.
I'm definitely not assuming that none will, I'm just assuming it will be a some smallish fraction for the foreseeable future. Nearly 50% of California's working population works for small business. It's not just the cost of the equipment, but also cost up upgrading the panels and, almost certainly, service lines.
Where I am (a city in California), you have to pay for replacing the service lines/conduits, including digging it up/repairing the street and sidewalk, even if they run 1 city block.
Side note: electric cars will be a large part of the grid balancing in the future.