Taking care of the elderly is a labour intensive business. Automation doesn't clean an old person's glasses (real life example), make their bed or cook their meals.
Specifically, if there are socialized "assisted living" facilities, or even in-the-community caregiver visitation, then the amount of caregiving work-hours per day per elderly person is X. If the only possible arrangement is getting a live-in personal care-giver, then that figures is 2X or 3X (or some factor, I don't have the figures); and most people probably just don't get care.
self driving cars may be limited but they will be a great solution for the elderly