The team versions, on the other hand, allow for multiple collaborators AND "user management". If you wanted finer control over what collaborators can and cannot do, you'd need a team version.
True, but at least the collaborators are no longer limited.
Since April 14th 2020: "GitHub is now free for teams":
We’re happy to announce we’re making private repositories with unlimited collaborators available to all GitHub accounts.
All of the core GitHub features are now free for everyone.
Until now, if your organization wanted to use GitHub for private development, you had to subscribe to one of our paid plans. But every developer on earth should have access to GitHub. Price shouldn’t be a barrier.
This means teams can now manage their work together in one place: CI/CD, project management, code review, packages, and more. We want everyone to be able to ship great software on the platform developers love.
Teams who need advanced features (like code owners), enterprise features (like SAML), or personalized support can upgrade to one of our paid plans.
Since May 2020, ownership transfert is being tested.