?Does anybody monetize leads to other industries?

[Nettles Mason]

Does anybody monetize leads to other industries?

I was kicking around an idea and wanted some feedback on how or if I should approach it. I am marketing for tenants in multiple cities to fill  very limited amount of vacancies.

If I get 50 applicants for every 1 houses, what to do with the other 49?- Tenants needs expire-if they need a house today they will not need one next year

Ex. I ask them the basics. Name, credit score, If they have renters insurance, if no-would they like to be contacted by a local agent? If yes, sell this lead to a local insurance company.

It just seems if you have information, they opt-in, and do not need your services; how to make money with this information? 

Interested in your thoughts and what you do