If you are a human, you are going to get old one day. That in itself is a reason to look around at how the elderly live. How are they treated? What would you want to have around you if you were that elderly person?
When I do this sort of observation, besides access to social interaction and family caring for me, I would like three things to be in good order when I am old: I want technology to assist my life, I want enough money to get through the months, and I want easy enough access to medicine and healthcare for my ageing body and mind.
These three things are not the answer, but I am sure they can help someone to enjoy their later years. There is enough of a need and supply of all three to start a service and make a change for the good.