Too labor intensive. Have you ever seen that show called 'Hoarders'? Most people think their stuff is valuable while in most cases it is really just junk.
More like a business to assist with the transition process to the next stage of life for the elderly. Boomers are moving INTO retirement but in ten years they'll start moving to the next stage, higher levels of care, less responsibility, less stuff, and they'll be doing it with decreased ability to deal with the complexity. Boomer children will have more money than time.. and that adds up to a potential business...Many businesses are designed around replacing a naturally loving family member.
I could be wrong... happens...