Ask HN: Examples of open-source projects which became closed/proprietary?

[gitgud]

Are there any examples of Open-source projects - which for some reason - became closed-source?

Theoretically the project could be forked and continued as open-source, but I'm just wondering if there are many known cases of this and if it's a valid concern...

[andygrunwald]

This guy wrote about his open source project which he made closed source: https://medium.com/@kitze/github-stars-wont-pay-your-rent-8b...

[kick]

MongoDB.