Open means it is documented and anyone can interoperate or create a compatible implementation. The S3 API is open and there are many competing implementations,

Open means it is documented and anyone can interoperate or create a compatible implementation. The S3 API is open and there are many competing implementations, but Amazon de facto holds the reference implementation. A SaaS value add "orbit" is another way to monetize. Personally I think going all cryptocurrency on this is overthinking it in most cases.