Here are a few options for a formal title, each with a slightly different emphasis:

Option 1 (Direct and Academic)

The Monetization of Disinformation: How Malicious Actors Profit from Deceit

Option 2 (Focusing on the Economics)

The Political Economy of Fake News: Revenue Streams in the Disinformation Ecosystem

Option 3 (More Active and Journalistic)

Profiting from Falsehood: The Business Model of Disinformation Purveyors

Option 4 (Most Concise)

The Commercial Incentives Behind Disinformation Campaigns