Subscribe to my newsletter: https://simonowens.substack.com/   Lucas Grindley knows something about building sustainable revenue streams for media companies. When he was hired to Here Media, a network of LGBT news outlets, it was losing money, but over a period of six years he nurtured it back to profitability.    Now he’s the executive director of Next City, a 20-year-old nonprofit magazine dedicated to urban policy and equitable cities. When he first joined, the publication was almost entirely reliant on large grants, but he’s since diversified its revenue by building up its ad sales and small-donor memberships. Recently, it crossed the threshold of 1,000 paying members.   In a recent interview, Lucas walked me through his successful tenure at Here Media and explained how he’s brought a similar playbook to Next City.