large market

A very good chance to what?

People have money, or they don't. Age (these days) has little to do with that.

if the old people have money , they can buy something that they

can't afford to buy before.and they wiil have some need of sprite.such as

travelling,entertainment,and so on.It's must be a large market for some

company.doesn't it?

good thought
what you've said makes me thinking about selling toys to older people ...hehe...what you think ?

good idea
To be honest,I think it's a good idea.Mayba you can try it.

A number of years ago, I realized that there is a huge cohort of baby boomers, who are now aging. I think that health related businesses providing both services and equipment to the elderly consumer will do very well in the next decade or so.

The elderly make up a good part of the cruise business, and have done so, for many years. Retirees have the money, (and the time) for long trips.

yes
after graduation ,I want to open my own supermarket,it's not only
one,but many.the goods are only for old people,and there are all kinds
of thins in it.

Could be a good idea Frank, only thing is that many over 50's don't consider themselves Old. So you'd have to market your supermarket in such a way they don't feel segregated.

Certainly that age group have more disposable income and of course Phoenix is absolutely right about cruises and other vacations.