He released advancements with Tesla into the public domain (which could have been observed/reverse engineered by examining products). Advancements by SpaceX ha

He released advancements with Tesla into the public domain (which could have been observed/reverse engineered by examining products). Advancements by SpaceX have not been released. They haven't even been patented because SpaceX is competing against governments, so Musk does not want to disclose information to them. And since the product (rockets/spacecraft) can't be examined by the public, there's really no incentive to public domain the tech and give it to competitors.