How Github monopoly is destroying the open source ecosystem par Ploum - Lionel Dricot.

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A university professor teaching open source strategies discovered that 237 out of 238 students contributed to GitHub-hosted projects despite being taught about alternatives like GitLab, Codeberg, and Sourcehut. After being temporarily blocked from GitHub while grading, the professor realized students weren't just choosing GitHub projects—they couldn't imagine looking elsewhere. The centralization has made non-GitHub projects invisible to new developers. The solution: requiring students to contribute to projects they actually use rather than randomly browsing GitHub.