> Free customer base—Free customers are an important part of our business. These customers sign up for our service through our self-serve portal and are typically individual developers, early stage startups, hobbyists, and other users. Our free customers create scale, serve as efficient brand marketing, and help us attract developers, customers, and potential employees. These free customers expose us to diverse traffic, threats, and problems, often allowing us to see potential security, performance, and reliability issues at the earliest stage. This knowledge allows us to improve our products and deliver more effective solutions to our paid customers. In addition, the added scale and diversity of this traffic makes us valuable to a diverse set of global ISPs, improving the breadth and economic terms of our interconnections, bandwidth costs, and co-location expenses. Finally, the enthusiastic engagement of our free customer base represents a “virtual quality assurance” function that allows us to maintain a high rate of product innovation, while ensuring products are extensively tested in real world environments before they are deployed to enterprise customers.

It adds latency to API services, it doesn't add value in conditions where you aren't under attack. It inhibits legitimate users with privacy controls (and/or Firefox) in place.

It may or may not be worth it, but it isn't a panacea.