I think if we remove the term "LMS" from the conversation, Course Builder might make more sense (and its development pathway). It is open courseware, designed to be used freely by anyone. Its features support open learning (free from registration systems, open to any student, open to any user, freely shareable content, etc.). Once you start bringing in LMS to the conversation, it shifts to a conversation about closed uses (restricting to specific matriculated students, restricted to a specific institution, restricted to specific paid individuals, restricted to a specific format as determined by the developers of the tool).