Services for the elderly has been projected as a major growth industry for years. It isn't sexy, but there are huge needs there, and a lot of money to service it.
The business I'm working on at the moment addresses this need as well, but not in your niche. I recognize the opportunity there, and I'm going after it.
Want to start a lucrative business in elderly services? Gain their trust and they will tell you what to do.
It's really easy to uncover needs. Go to your local retirement village and run, say, a computer class - "How to use the Internet", or "How to email photos to your family". Many of these people are barely computer literate, but know they're not using them efficiently or correctly. Do some good, and you will establish yourself as an authority and an enabler (in the good sense). You will quickly build trust, and the word will spread like wildfire, especially if you're easily accessible. You probably won't make much, if any, money teaching the computer classes. However, if you think of it as the price of admission, you will find yourself with a trusting, willing audience with money who are keen to tell you what they need.
You should jump in with both feet.