I think it's just the most popular, most full-y featured OSS project.
Based on history, I don't think changing from a permissive OSS license will allow it to remain the most popular, most full-y featured project, especially in a world of competitors (plenty of which have venture funding).
Based on history, I don't think changing from a permissive OSS license will allow it to remain the most popular, most full-y featured project, especially in a world of competitors (plenty of which have venture funding).