Cool idea, but I doubt it will work. To end loneliness and build friendships, why not start with activities?

Organize locals, but for low paid(/volunteer) help with cleaning/cooking/gardening/computer support/driving lessons/etc. For busy/ill/lazy people?

Then, people can be introduced to each others.

If they have some activity/interest to talk about, it is easier to socialize with different types of people. I sincerely believe that every adult person on the planet knows about things I would love to hear about. Be it fishing, farming, literature or house maintenance.

(No, I'm not just trying to find good cleaning help. :-) )