How exactly does that work with the MIT license? If someone sponsors and gains access to the repo, they're permitted to fork and redistribute the code, right?
Of course, doing so would make me question why the author released this under a permissive license to begin with.
My reasoning is more that this is my side project, and I have limited time, and this seems like a good experiment to see if I can make OSS sustainable for once and also allow me to target help (my free time) towards users who are most invested in the project.
In the future I would like to open the repo but it might be tied to hitting a sponsorship amount or perhaps an extra service/product on top for those that want it.