Handling all these requests costs us considerably: servers, bandwidth and human time spent analyzing traffic patterns and devising methods to limit or block excessive new request patterns. We would much rather use these assets elsewhere, for example improving the software and services needed by W3C and the Web Community.

For the past few years, we've run GitLab.com as our free SaaS offering, featuring unlimited public and private repositories, unlimited contributors, and access to key features, like issue tracking, code review, CI, and wikis. None of those things are changing! We're committed to providing an integrated solution that supports the entire software development lifecycle at a price where everyone can contribute. So what's changing? Over time, the usage of GitLab.com has grown significantly to the point where we now have over two million projects hosted on GitLab.com and have seen a 16x increase in CI usage over the last year.

Anything Pwned Passwords related is free because I want maximum adoption and the cost is borne by @cloudflare. Anything related to querying email addresses requires a key to be purchased because I want to limit abuse and it costs me directly to run.