It's funny how companies can become their own worst enemy, which Microsoft has been since it acquired Github. Github itself recommends that you use the GPL license (see the Github-run https://choosealicense.com/). This has likely led to many projects choosing GPL/BSD/Apache/MIT by default, simply because the author didn't understand the differences between them. I've found that often, once people take the time to educate themselves about the various licenses, they instead prefer a highly-permissive license like The Unlicense (https://unlicense.org/).