A number of major reports have provided a top-level view on the drive to create institutions that will support investigative journalism. Here are some of the key ones:
Starting a Nonprofit News Organization, by the Institute for Nonprofit News
Six Strategies for Sustainable Journalism
DW Academy Media Viability Handbook
Fighting For Survival: New Report on Media Startups in the Global South
Publishing for Peanuts: Innovation and the Journalism Start-Up
How Nonprofit News Ventures Seek Sustainability: A Knight Study
Funding the News: Foundations and Nonprofit Media
Venture-backed News Startups and the Field of Journalism
A journalism innovation and entrepreneurship reading list
The Impact of Charity and Tax Law/Regulation on Not-for-Profit News Organizations
Sustainability: A Survival Guide for Nonprofit Investigative Groups
Global Investigative Journalism: Strategies for Support
The Membership Puzzle partnered with Luminate and Democracy Fund to launch The Membership in News Fund to run through May 2020. The $700,000 fund is designed to support innovative membership models. More details on applying are here. No set deadline. (Spanish)
Better News is a project of the American Press Institute and the Knight-Lenfest Newsroom Initiative, funded by the John S. and James L. Knight Foundation to address issues of sustainability.
European Federation of Journalists study on new business models to promote journalism