Publication I Want To Start A Niche Publication Of My Own And Researching The Business Model Of Readers Digest?

I want to start a niche publication of my own and researching the business model of Readers Digest? - publication

I am especially in legal issues relating to the identification of content in other journals related interest and reuse them in my publication after editing / condensing.

Should I leave them? Should I pay? Do I have the profits with them? As Reader's Digest all that? Are there any case studies to disclose further details?

Thank you in advance for your help.